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£7.99
  • Diamond-shaped contact patch
  • Various hardnesses available
  • Compatible with most Airsoft AEGs

If you're building an AEG for maximum range, the Maple Leaf Monster HOP-up Bucking for AEG will be an asset to your objective. Designed with a diamond-shaped contact patch to increase surface contact with your BBs, the Monster is ideally used with heavy BBs (0.28g+) and provides increased HOP-up effect, especially when paired with an OMEGA or OHM HOP-up nub.

The Monster is available in a wide range of hardnesses, offering an option for any build objective, from CQB to DMR. Compatibility-wise, this is a standard AEG HOP-up rubber and should fit the vast majority of Airsoft AEGs on the market but may require expertise and tuning to fit. If you're getting out-ranged and want to go from prey to predator, the Maple Leaf Monster HOP-up bucking belongs in your build!

£8.99
  • High-density polymer HOP-Up chamber
  • Designed for M4/AR-15 AEGs
  • Rotary adjustment wheel

Are you having HOP-up troubles with your M4 platforms? Delta Armory has you covered! This HOP-up chamber is a replacement part and comes with all the necessary pieces for installation, including the HOP-up rubber and nub. The main chamber is made from a sturdy plastic polymer and is compatible with all M4 style AEGs which have V2 Gearboxes. It is an affordable solution to mend your platforms with damaged or old HOP-up chambers.

The Delta Armory HOP-up chamber is an affordable replacement for M4/AR-15 AEGs, fix up those old primaries and get them shooting again with this low-price solution.

£64.99
  • Optical MOSFET
  • Gate Quantum trigger included
  • Pre-installed Expert Firmware

If you're running an SMG-5, M4/AR-15 or any other AEG which uses a version 2 gearbox, the GATE ASTER™ MOSFET will take your AEG to the next level. This advanced electronic trigger unit replaces your conventional trigger contacts with optical sensors, allowing for 250 different trigger sensitivity settings, burst and binary fire modes and a plethora of other functions to be programmed in using either the trigger and fire selector or the Gate Control Station App.

This set also includes the Gate QUANTUM CNC trigger which is compatible with M4/AR-15 AEGs but unfortunately won't work with SMG-5 or G3 platforms. When installed, the Quantum trigger offers 250 trigger sensitivity options via the ASTER's optical sensors. Constructed from CNC-machined aluminium, the Quantum both looks great and allows the ASTER™ to take full advantage of its optical trigger sensors.

This MOSFET is a great choice due to its fantastic balance of cost-effectiveness and performance, offering incredible efficiency improvements even before you get into the programmable features and customisation options. As with all ETU/MOSFET systems, a certain amount of expertise will be required to install the ASTER™ so if you're not confident, we suggest seeking a technician to carry out the installation process for you. If you're ready to take your AEG's performance to the next level, you're ready for the ASTER™

£69.99
  • Optical MOSFET
  • Gate Quantum trigger included
  • Pre-upgraded to Expert Firmware

If you're running an SMG-5, M4/AR-15 or any other AEG which uses a version 2 gearbox, the GATE ASTER™ MOSFET will take your AEG to the next level. This advanced electronic trigger unit replaces your conventional trigger contacts with optical sensors, allowing for 250 different trigger sensitivity settings, burst and binary fire modes and a plethora of other functions to be programmed in using either the trigger and fire selector or the Gate Control Station App.

This set also includes the Gate QUANTUM CNC trigger which is compatible with M4/AR-15 AEGs but unfortunately won't work with SMG-5 or G3 platforms. When installed, the Quantum trigger offers 250 trigger sensitivity options via the ASTER's optical sensors. Constructed from CNC-machined aluminium, the Quantum both looks great and allows the ASTER™ to take full advantage of its optical trigger sensors.

This is the MOSFET we use in our Bolster Tuned platforms due to its fantastic balance of cost-effectiveness and performance, offering incredible efficiency improvements even before you get into the programmable features and customisation options. As with all ETU/MOSFET systems, a certain amount of expertise will be required to install the ASTER™ so if you're not confident, we suggest seeking a technician to carry out the installation process for you. If you're ready to take your AEG's performance to the next level, you're ready for the ASTER™

£109.99
  • CNC Aluminium housing
  • Brushless motor - High torque to weight ratio
  • Long shaft - For M4/AR-15, SMG-5, G3 & P90 SMGs

If you're looking for top-tier performance from your next AEG build, the Warhead Industries CNC Black Brushless Motor belongs inside! This, the long shaft variant, is designed for standard M4/AR-15, SMG-5, G3 and P90 AEGs and is the same motor used in Bolster Armouries custom builds, a testament to its quality, reliability and incredible performance.

The CNC Black Brushless motor boasts a CNC 7075 aluminium housing and hand-wound stator, promising a more precise wind than machine-wound stators which translates to improved power and efficiency. To keep the immense power of the Warhead CNC Black under control, the motor is equipped with what is known as an ESC (electronic speed control) module which protects your battery, provides low-voltage cutoff and regulates speed.

The perks of a brushless motor over conventional motors include higher torque-to-weight ratio, reduced wear and tear, reduced operating noise and reduced heat build-up, allowing you to let rip with long bursts guilt-free! If you have your sights set on the pinnacle of AEG performance, the Warhead Industries CNC Black Brushless Motor; Long Shaft is the motor you need to achieve it!

£109.99
  • CNC Aluminium housing
  • Brushless motor - High torque to weight ratio
  • Long shaft - For M4/AR-15, SMG-5, G3 & P90 SMGs

If you're looking for top-tier performance from your next AEG build, the Warhead Industries CNC Black Brushless Motor belongs inside! This, the long shaft variant, is designed for standard M4/AR-15, SMG-5, G3 and P90 AEGs and is the same motor used in Bolster Armouries custom builds, a testament to its quality, reliability and incredible performance.

The CNC Black Brushless motor boasts a CNC 7075 aluminium housing and hand-wound stator, promising a more precise wind than machine-wound stators which translates to improved power and efficiency. To keep the immense power of the Warhead CNC Black under control, the motor is equipped with what is known as an ESC (electronic speed control) module which protects your battery, provides low-voltage cutoff and regulates speed.

The perks of a brushless motor over conventional motors include higher torque-to-weight ratio, reduced wear and tear, reduced operating noise and reduced heat build-up, allowing you to let rip with long bursts guilt-free! If you have your sights set on the pinnacle of AEG performance, the Warhead Industries CNC Black Brushless Motor; Long Shaft is the motor you need to achieve it!

£4.99
  • Rubber construction
  • Replaces the HOP-up unit spring
  • Provides superb air seal

If you're the techy type and want to maximise your AEG's efficiency, the Bolster Armouries HOP-up to Barrel O-Ring Shim Set belongs in your toolbox! This set includes 10 o-rings designed to fit around the HOP-up unit and inner barrel, forcing it back to meet the gearbox as seamlessly as possible to promote maximum efficiency and reduce shot-to-shot FPS deviation. 

This set is designed to replace the "one size fits all" HOP-up unit spring, providing a user-customisable solution to account for manufacturing tolerances. While this will take a bit of trial and error to get the perfect fit for your AEG it should prevent airseal qualities from reducing over time and avoid that annoying realisation that you forgot to reinstall the HOP-up spring after upgrading or maintenance! 

The Bolster Armouries HOP-up to Barrel O-Ring Shim set should fit almost every AEG on the market and you probably won't need to use the full set, meaning you might even be able to replace two HOP-up springs with a single set. 

£7.99
  • Specna CORE™ Gearbox shell
  • Radiused Cylinder window
  • 8mm Bushings included

The Spenca CORE™ V2 Gearbox Shell provides 8mm bushings, radiused cylinder windows to help prevent cracks, and quick release spring functionality. Perfect for starting your ultimate gearbox build! 

£2.99
  • Increased gear stability
  • Improved gearbox longevity#
  • Precision adjustment

Upgrade your AEG with a replacement shim set for increased gear stability, precise adjustment and gearbox longevity. Featuring steel ST 2 K60 construction, available in a variety of thicknesses.

Specifications:

  • 20 pcs
  • 0.1/0.2/0.3/0.5 mm thickness
  • 3 mm internal hole
  • 6 mm diameter
£6.99
  • Carbon fibre construction
  • Reinforced build
  • Strong yet flexible

FPS Softair brings us a Carbon Fibre Reinforced AEG Tappet Plate for use with version 2 gearboxes. It is specially formulated to be strong yet flexible enough to bend slightly.

The plate is constructed from extremely lightweight polycarbon and is designed to be attached to the air nozzle and sector gear. This process controls the feeding of BBs from the magazine into the hop up chamber.

£84.99
  • Advanced MOSFET/ETU system
  • Expert firmware included
  • Compatible with Version 2 gearboxes

If you want to transform your version 2 gearbox-equipped AEG into a true "smart gun", the Gate TITAN™ MOSFET V2; Expert Firmware will do exactly that. This advanced MOSFET/ETU system replaces the copper trigger contact inside the version 2 gearbox with optical sensors, eliminating the need for a cut-off lever, extending the lifespan of your AEG and offering unprecedented trigger sensitivity, fire mode and cycle control adjustment options. 

The latest version of the TITAN™ V2 includes the Expert Firmware, meaning you have immediate access to the most advanced programming functions of the TITAN™ without needing to pay more to update the firmware. With the Gate USB-Link or Blulink, you can set your pre-cocking level for a speedy trigger response, adjust your trigger sensitivity, tune active braking and adjust the rate of fire for a truly custom setup that suits your playstyle perfectly. The usual programmable MOSFET functions of other ETUs are also present, including burst mode, binary trigger, semi-auto-only, ramping semi-auto, dual-stage trigger and sniper delay. 

If you have an AEG mega-build on your mind using a version 2 gearbox, add the Gate TITAN™ MOSFET V2; Expert Firmware to your parts list to take it to the next level!

£43.99
  • Programmable ETU/MOSFET
  • Offers Burst, binary, semi-only & AUG mode
  • For version 2 M4/AR-15 AEG gearboxes

If you want to turn your version 2 gearbox-equipped AEG into a true space gun, the Delta Armory EAGLE™ Programmable MOSFET Control Unit is one of the most affordable ways to do it. The EAGLE™ is compatible with any Airsoft AEG which uses a version 2 gearbox and improves trigger response and rate of fire through its gains in electrical efficiency, amongst its many other benefits!

The EAGLE™ offers more programmable options than many of its rivals in the cheap MOSFET game. These include 3 or 5-round burst mode, binary trigger, sniper delay, AUG mode, semi-auto only, 5 levels of trigger sensitivity adjustment and adjustable pre-cocking, with 6 levels to choose from. Active braking can also be turned on or off and all programmable options can be set using the trigger and fire selector of your AEG, avoiding the additional expense of needing an app or PC connectivity to take advantage of the wealth of programmable options available. 

Naturally, the EAGLE™ will require a certain amount of skill and expertise to install so if this is your first time, we recommend consulting an experienced technician. Compatibility-wise, the EAGLE™ is designed for M4/AR-15 version 2 gearboxes specifically and should be compatible with most V2 gearbox shells on the market, though we have not yet confirmed whether it will work with G3 and SMG-5 platforms. If you're looking for an affordable way to add fancy features to your M4/AR-15 AEG, the EAGLE™ Programmable MOSFET Control Unit from Delta Armory is exactly that!

£9.99
  • Enlarged contact surface
  • Bridge style - Great for accuracy
  • Fits most Airsoft AEG HOP-up units

If you seek more accuracy and range from your AEG, the Prometheus Bridge HOP-up Tensioner for AEGs will help you achieve it! Supplied as a pack of two tensioners, these are the "Bridge" style design with a central groove designed to reduce side-to-side deviation, focussing on maximum accuracy and providing the smallest grouping possible. The contact surface provided by this HOP-up nub (another word for tensioner) is far larger than the standard, resulting in a stronger backspin effect and extended range with heavy-weight BBs. 

The two tensioners included in the set are of different colours; one purple and one black. The purple tensioner is made from softer rubber, designed for sub-350 FPS builds and the black one is slightly harder, ideal for 350 FPS and above, making it the perfect tensioner for an AEG DMR. Compatibility-wise, these tensioners should fit almost any Airsoft AEG HOP-up unit but as always is the case with internal upgrades, we only recommend these for experienced techs and those who know their way around AEG internals. If accuracy and range is your objective, the Prometheus Bridge HOP-up Tensioner for AEGs belongs in your build!

£34.99
  • Full cylinder group upgrade kit
  • For AEG version 2 gearboxes
  • For M4/M16

Upgrade your M4/M16 AEG. with an FPS Softair Tune Up Kit and increase its reliability and performance. The high-quality O-Rings ensure that it eliminates air leak and gives you perfect air seal for maximum efficiency and power. Constructed from Ergal (Aluminium 7075), the cylinder has a high strength and is resistant to fatigue with increased durability. The cylinder head is made for use with version 2 gearboxes, compatible with Tokyo Marui derived designs, with barrel lengths of 251 to 300mm.

This tune-up kit includes:

  • Cylinder (CLTC)
  • Cylinder Head (TC02E)
  • Air Nozzle with O-Ring for M4/M16 (SPM4E)
  • Double O-Ring Ball Bearing AEG Piston Head Advanced Type (TPAVN)
£9.99
  • Reduces stresses
  • Improves lifespan
  • For V2 gearbox

Standard guides do not feature ball bearings, and these are included in this product because they reduce stress on the spring by letting it rotate freely. When upgrading your gearbox bearing spring guides should always be considered because they will improve the life-span of a spring by reducing sideways stresses.

The spring bearing is construction from tough but lightweight aluminium Ergal with a smooth anodised finish. Fits version 2 gearboxes in replicas models such as M4, M16, SR16, SMG-3, MC51, G3, MINIMI, LR300.

£124.99
  • Brushless motor
  • 39K or 48K RPM speeds available
  • Long Shaft - M4/AR-15, SMG-5, G3 & P90 AEGs

If you're on the hunt for upgraded motors and need maximum speed and torque, the Specna Arms DARK MATTER™ Brushless Motor; Long should fit the bill. This Brushless Motor is Specna's top of the line offering, made with a CNC aluminium housing and available in ultra swift 39K RPM and the diabolically fast 48K RPM variants. This is the "long shaft" version, designed for use in M4/AR-15, SMG-5, G3 and P90 AEGs.

DARK MATTER™ motors are Brushless Motors, similar to the legendary Warhead Industries examples and boasting lower heat build-up, higher torque-to-weight ratio, improved reliability via reduced friction and significantly reduced operating noise when compared to conventional brushed motors. While installing a DARK MATTER™ motor in your AEG will make it a beast, the more important aspect is keeping it performing in the long term. As is always the case with super strong motors, we only recommend the Dark Matter series to those with the technical know-how to ensure their setup can handle it!

£124.99
  • Brushless motor
  • 39K or 48K RPM speeds available
  • Long Shaft - M4/AR-15, SMG-5, G3 & P90 AEGs

If you're on the hunt for upgraded motors and need maximum speed and torque, the Specna Arms DARK MATTER™ Brushless Motor; Long should fit the bill. This Brushless Motor is Specna's top of the line offering, made with a CNC aluminium housing and available in ultra swift 39K RPM and the diabolically fast 48K RPM variants. This is the "long shaft" version, designed for use in M4/AR-15, SMG-5, G3 and P90 AEGs.

DARK MATTER™ motors are Brushless Motors, similar to the legendary Warhead Industries examples and boasting lower heat build-up, higher torque-to-weight ratio, improved reliability via reduced friction and significantly reduced operating noise when compared to conventional brushed motors. While installing a DARK MATTER™ motor in your AEG will make it a beast, the more important aspect is keeping it performing in the long term. As is always the case with super strong motors, we only recommend the Dark Matter series to those with the technical know-how to ensure their setup can handle it!

£194.99
  • Complete HPA engine
  • Semi/full auto version
  • For V2 gearbox equipped M4/AR-15 AEGs

If you're looking for the cheapest and easiest way to convert your M4/AR-15 AEG to HPA, you just found it! The Ares Drop-in HPA Engine Conversion Set for M4/AR-15 V2 Gearbox is a complete set with a V2 gearbox shell, HPA engine and EFCS module all pre-built, saving you hassle sourcing the right parts while saving you a few quid as a bonus!

This HPA Engine Gearbox is designed as a drop-in replacement for standard M4/AR-15 AEG Version 2 gearboxes but it may need alignment and tuning to fit certain receivers and HOP-up units. To power the pre-installed EFCS, an 11.1V LiPo battery with an XT30 battery connector is required and the air line fitting is US spec, meaning it will only accept US-type air lines and won't work with EU-type lines. For those as yet uninitiated future HPA players; this set does not include an air line, regulator or air bottle and you will need these to get into the HPA game!

This is the semi/full auto version designed for non-ambidextrous M4/AR-15 AEG receivers and is equipped with a standard M4/AR-15 curved trigger, ideal for almost any build style. As with any internal upgrade, this engine will require expertise to install and some level of familiarity with M4/AR-15 AEG internals. If you're struggling, you can contact us or your local Airsoft tech for advice.

£4.99
  • 6 different springs
  • Precision recalculated tension
  • Enhanced durability

If you find your springs are wearing down faster than they should you need a replacement spring set!

This  pack comes with 6 different types of spring including:

  • Switch Return Spring
  • Tappet Plate Spring
  • Anti-Reversal Lath Spring
  • Stopper Arm Spring
  • Selector Plates spring for Version II
  • Trigger Return Spring

The springs are designed for use with version 2 gearboxes, for AEG rifles such as M4s, AR36s, SMG-5 and more!

£14.99
  • High strength, low weight
  • Carbon fibre and metal teeth
  • For version 2 & version 3 gearbox

FPS Softair brings you a high-quality piston with a carbon fibre-reinforced technopolymer body and a full rack of steel teeth for a good combination of high strength and low weight. This is compatible with Tokyo Marui-style Version 2 and Version 3 gearboxes.

This Superlight piston reduces friction for an increased rate of fire, in addition to the overall reliability of your rifle. The sliding guides are designed to minimize friction and retain the lubricant for a long period of time and the rack seat is decentralized to favour the coupling between the piston teeth and those of the sector gear.

£14.99
  • CNC Aluminium construction
  • O-ring Equipped
  • Compatible with V2 & V3 gearboxes

If you're working on your gearbox and looking for more efficiency, the Lonex Aluminium Piston Head for V2/V3 Gearbox is ideal for your build. This piston head is constructed from CNC aluminium and is equipped with a rubber O-ring surrounding its surface to close the gap between the piston head and cylinder, ensuring every bit of air compressed by the piston is translated into downrange effect.

This piston head is compatible with version 2 and version 3 AEG gearboxes and is a handy part to have around for the techy types. Whether you're building a custom gearbox or upgrading, the Lonex Aluminium Piston Head for V2/V3 Gearbox is an essential part!

£24.99
  • Upgrade kit for M4/M16
  • For AEG version 2 gearboxes
  • Increased efficiency and power

Upgrade your M4/M16 AEG. with an FPS Softair Tune Up Kit and increase its reliability and performance. The high-quality O-Rings ensure that it eliminates air leak and gives you perfect air seal for maximum efficiency and power. Constructed from Ergal (Aluminium 7075), the cylinder head has high strength and is resistant to fatigue and is made for use with version 2 gearboxes, compatible with Tokyo Marui derived designs.

This tune-up kit includes:

  • Cylinder Head (TC02E)
  • Air Nozzle with O-Ring for M4/M16 (SPM4E)
  • Double O-Ring Ball Bearing AEG Piston Head Advanced Type (TPAVN)

This product increases the performance of your AEG.

£9.99
  • CNC stainless steel
  • For AEG version 2 & 3 gearboxes
  • Improved performance

Upgrade your M4/M16 AEG. with an FPS Softair Stainless Steel Cylinder and increase its reliability and performance. The cylinder has a high strength and is resistant to fatigue with increased durability. The cylinder is made for use with version 2 or 3 gearboxes, compatible with Tokyo Marui derived designs, with barrel lengths of 451 to 550mm.

£26.99
  • High speed gear set
  • Fits most Airsoft gearboxes
  • 13:1 Ratio - Great for high ROF builds

Building a speed demon of an AEG? You will need high speed gears to get the most out of it! The CNC steel High Speed Gearset from CYMA has a 13:1 ratio, which means every 13 motor turns the gearbox will cycle once, which is a step faster than standard 18:1 Airsoft gears. These gears pair perfectly with a high speed motor to provide a demonic rate of fire, as can be seen in the latest upgraded versions of CYMA's Platinum series AEGs. This gearset is designed for use with M120 springs and below only, so should be fine for most UK legal Airsoft AEGs but is not suitable for a DMR rifle with high FPS. This gearset is a version 2/3 set so should work in any AEG with a V2/3 gearbox and many others which share the same gears.

£89.99
  • TITAN™ MOSFET
  • For Version 3 gearboxes
  • Expert Firmware included

If you're running an AEG with a version 3 gearbox, the Gate TITAN™ MOSFET V3; Expert Firmware is what you need to turn your primary into a space gun! This advanced MOSFET/ETU system is the latest version of the original TITAN™, designed for version 3 gearboxes found in AK, AR36, AUG and SMG-5K AEGs, boasting a drop-in fit with the vast majority of V3 shells on the market. That said, the TITAN™ still requires knowledge of AEG internals, care and patience to install; as such, we only recommend this upgrade for those with a decent level of technical knowledge and confidence working on AEGs.

The latest version of the TITAN™ V3 includes the Expert Firmware, meaning you have immediate access to the most advanced programming functions of the TITAN™ without needing to pay more to update the firmware. With the Gate USB-Link or Blulink, you can set your pre-cocking level for a speedy trigger response, adjust your trigger sensitivity, tune active braking and adjust the rate of fire for a truly custom setup that suits your playstyle perfectly. The usual programmable MOSFET functions of other ETUs are also present, including burst mode, binary trigger, semi-auto-only, ramping semi-auto, dual-stage trigger and sniper delay.

For those in the process of transforming their V3 gearbox-equipped AEG into an absolute beast, the Gate TITAN™ MOSFET V3; Expert Firmware is an essential addition to your shopping list. The TITAN™ extends the lifespan of your AEG by eliminating the cut-off lever and trigger contacts, along with offering unprecedented trigger sensitivity, fire mode and cycle control adjustment options. If you want your AEG to perform at the top of its game, the TITAN™ is a big part of achieving that!

£11.99
  • High impact resilience
  • CNC Ergal aluminium construction
  • For version 2 gearboxes

Upgrade your AEGs gearbox to improve shot consistency thanks to a better air seal. The cylinder head is constructed from CNC Ergal and is anodised with a smooth surface finish, precisely engineered so that the tolerance is not affected. Features powerful built in UREPAN bumper that absorbs the shock from the piston head.

This cylinder head is suitable for version 2 gearbox variants of M4, M16, SR16, MP5, MC51, G3, M249 and LR300 and is compatible with ICS, Tokyo Marui, Classic Army, VFC and more. The hardness of the yellow rubber is 60 degrees shore, with a good balance between air seal and strength making it suitable for use in a custom DMR, as well as helping to protect the gearbox and reduce noise.

£5.99
  • 4 Different lengths
  • Easily adjust your AEGs FPS
  • Reinforced polymer construction

The Airtech Studios Set of 4 Spring Shims;11mm Inner Diameter are designed for most VFC, Krytac & ASG spec spring guides. These reinforced polymer shims slide onto the spring guide and add additional tension to the existing spring within the gearbox. The different sizes of shim add different amounts of FPS to your replica. The smallest shim adds roughly 5 FPS to your replica and the largest adds roughly 20 FPS. The shims are designed to be of various sizes so that you can combine them and find the optimal FPS increase to keep your replica within site limits.

These shims give you an easy way to increase your platform's FPS without having to have multiple springs. Simply add or remove the shims as and when you need to adjust your AEGs FPS, with minimal hassle!

£9.99
  • CNC stainless steel
  • For AEG version 2 & 3 gearboxes
  • Improved performance

Upgrade your AEG with an FPS Softair Stainless Steel Cylinder and increase its reliability and performance. The cylinder is constructed from high-strength steel and is resistant to fatigue with increased durability. The cylinder is made for use with version 2 or 3 gearboxes, compatible with Tokyo Marui derived designs, with barrel lengths of 251 to 330mm.

£10.99
  • Improves air seal and efficiency
  • CNC aluminium Ergal construction
  • Double O-ring and ball bearing set

Upgrade your AEGs piston head to improve air seal and increase the efficiency of airflow through the cylinder. This piston from FPS Softair has ports on the front to push out the O-ring as it moves forwards, this ensures that all of the air in the cylinder is being pushed out to propel the BB.

Constructed from CNC aluminium Ergal, which has been anodised, the piston head features a smooth precise surface. The piston head has ports on the front to push out the O-ring as it moves forwards, this ensures that all of the air in the cylinder is being pushed out to propel the BB.

The ball bearings help reduce tension created by the spring compressing and expanding, this combined with a ball bearing spring guide is the optimal set up to keep your spring in good shape.

This is the most advanced version with 8 ventilation holes for higher speed and rate of fire, double O-ring and ball-bearing. This head is designed for version 2 and 3 gearboxes but may fit other types.

£13.99
  • Reinforced polymer
  • Increase RPS and improve FPS consistency
  • Pull Stronger springs without piston/rack damage

Take your AEG to the next level with a revolutionary Piston. It has been redesigned to ensure a premium performance. The Nightstalker piston has eradicated all the common weaknesses of an AEG piston to create an almost flawless design. Firstly, it has been constructed from a reinforced polymer, one that can pull stronger springs without causing damage to itself. It also has a drop-in angle of engagement (AOE) which helps distribute the force evenly on the teeth of the piston rack, reducing the risk of premature wear or breakage.

The stress points of the piston have been revised to spread the wear between 3 contact points and drastically reduce the load on each tooth. Another upgrade is that the piston rails have been revised to reduce friction, this removes the wobbling of the piston against the gearbox and keeps it completely straight. All these revisions and enhancements make for a consistent improvement in FPS and performance. Make your AEG premium, for real.

Level up your AEG and get CQB ready

Browse our full spectrum of AEG internal parts, including P90 parts that allow you to upgrade your electric SMG, as well as parts suitable for AEP mods and more. 

From steel airsoft motors to electric triggers, we only ever stock named brands we’ve tried and tested ourselves. Plus, if you want to make some changes to your airsoft gun, our expert technical team will be happy to support you - simply get in touch with us and let us know what you need. 

Our collection of airsoft upgrades is second to none, so why shop anywhere else? Browse online today for next day delivery.