All Electric Parts

If you are building yourself a tech-filled, Gate ASTER V2 equipped M4 AEG then an interesting trigger is a great way to add some discrete external flair to your custom build to give onlookers a slight hint at what's inside. The Quantum Trigger from Gate is interesting in many more ways than one!

The Quantum trigger is available in 4 different shapes, all of which are CNC machined from aluminium, giving them a flawless appearance and a strong, flex-free structure. The colour options are almost endless, giving you the choice of some eye-catching metallics or dull and discrete tactical colours to suit any build, from DMR to speedsoft BB hose. The Quantum trigger becomes all the more impressive in its functional qualities; pairing it with the Gate ASTER V2 allows the trigger sensitivity to be adjusted to 470 different settings with over 60 settings just for the first millimetre of movement. Our jaw is still hanging open!

If you are building yourself a tech-filled, Gate ASTER V2 equipped M4 AEG then an interesting trigger is a great way to add some discrete external flair to your custom build to give onlookers a slight hint at what's inside. The Quantum Trigger from Gate is interesting in many more ways than one!

The Quantum trigger is available in 4 different shapes, all of which are CNC machined from aluminium, giving them a flawless appearance and a strong, flex-free structure. The colour options are almost endless, giving you the choice of some eye-catching metallics or dull and discrete tactical colours to suit any build, from DMR to speedsoft BB hose. The Quantum trigger becomes all the more impressive in its functional qualities; pairing it with the Gate ASTER V2 allows the trigger sensitivity to be adjusted to 470 different settings with over 60 settings just for the first millimetre of movement. Our jaw is still hanging open!

If you are building yourself a tech-filled, Gate ASTER V2 equipped M4 AEG then an interesting trigger is a great way to add some discrete external flair to your custom build to give onlookers a slight hint at what's inside. The Quantum Trigger from Gate is interesting in many more ways than one!

The Quantum trigger is available in 4 different shapes, all of which are CNC machined from aluminium, giving them a flawless appearance and a strong, flex-free structure. The colour options are almost endless, giving you the choice of some eye-catching metallics or dull and discrete tactical colours to suit any build, from DMR to speedsoft BB hose. The Quantum trigger becomes all the more impressive in its functional qualities; pairing it with the Gate ASTER V2 allows the trigger sensitivity to be adjusted to 470 different settings with over 60 settings just for the first millimetre of movement. Our jaw is still hanging open!

If you are building yourself a tech-filled, Gate ASTER V2 equipped M4 AEG then an interesting trigger is a great way to add some discrete external flair to your custom build to give onlookers a slight hint at what's inside. The Quantum Trigger from Gate is interesting in many more ways than one!

The Quantum trigger is available in 4 different shapes, all of which are CNC machined from aluminium, giving them a flawless appearance and a strong, flex-free structure. The colour options are almost endless, giving you the choice of some eye-catching metallics or dull and discrete tactical colours to suit any build, from DMR to speedsoft BB hose. The Quantum trigger becomes all the more impressive in its functional qualities; pairing it with the Gate ASTER V2 allows the trigger sensitivity to be adjusted to 470 different settings with over 60 settings just for the first millimetre of movement. Our jaw is still hanging open!

If you are building yourself a tech-filled, Gate ASTER V2 equipped M4 AEG then an interesting trigger is a great way to add some discrete external flair to your custom build to give onlookers a slight hint at what's inside. The Quantum Trigger from Gate is interesting in many more ways than one!

The Quantum trigger is available in 4 different shapes, all of which are CNC machined from aluminium, giving them a flawless appearance and a strong, flex-free structure. The colour options are almost endless, giving you the choice of some eye-catching metallics or dull and discrete tactical colours to suit any build, from DMR to speedsoft BB hose. The Quantum trigger becomes all the more impressive in its functional qualities; pairing it with the Gate ASTER V2 allows the trigger sensitivity to be adjusted to 470 different settings with over 60 settings just for the first millimetre of movement. Our jaw is still hanging open!

If you have had a gearbox failure and you don't fancy opening it up, the CYMA Complete Version 2 Gearbox w/High Torque Motor & ETU is a pre-upgraded and pre-wired replacement which can be installed with minimal effort and no need to solder or open the gearbox shell. As always, we recommend you have some technical experience before installing a new gearbox, but when it comes to Airsoft upgrades this is about as easy as they get.

This gearbox set is designed for M4/AR-15 AEGs and has the correct nozzle length and selector plate for the task and is also pre-wired to a Deans connector so you can benefit from a lower resistance connector for increased electrical efficiency. Also included with the set is a CYMA high torque Neodymium magnet motor, providing a very snappy trigger response and the power to handle stronger springs than a standard motor.

The icing on the cake is the pre-installed MOSFET/ETU which prevents gearbox lock-up on semi-auto, provides further improvements to the trigger response and a boost to the rate of fire. If your M4 gearbox has issues or you want to freshen up an old M4 with a brand new and pre-upgraded gearbox this set would be a fantastic choice, avoiding the messing around and getting you back to shooting with minimal effort!

If you use heavy BBs and really want to send 'em, the Maple Leaf MR HOP Bucking for AEG belongs in your build! The MR HOP-up Bucking offers a wider and longer “R-HOP” style contact patch for increased HOP-up effect and extended range with heavy BBs. The MR HOP also uses a shield-shaped groove around the contact patch to allow it to stretch and add to the strong HOP-up effect along with an air seal improving C-ring which ensures the bucking is firmly fitted to the barrel and unable to slip or rotate.

MR stands for “Maximum Range”, a design based on home-brewed R-HOP buckings, intended to prioritise range over grouping size and is best used paired with a Maple Leaf OMEGA or OHM HOP-up nub. Compatibility-wise, the MR HOP is designed to fit most Airsoft AEGs but as always, a certain level of expertise and tuning will be required for installation. If you're committed to long-range leaning and want your primary performing at its best, the Maple Leaf MR HOP Bucking for AEG is essential!

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!

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!

If you're building your M4/AR-15 AEG to focus on range, accuracy and efficiency, the RetroArms CNC Rotary HOP-Up Chamber Gen.2 for M4/AR-15 AEG belongs in your build. This set is a full replacement rotary type HOP-Up unit for version 2 gearbox-equipped Airsoft M4/AR-15 platform AEGs and includes all of the parts you'll need to replace your stock HOP-up unit. The set also includes the choice of two HOP-up arms, one designed for flat HOP setups and one for conventional.

As with all internal upgrade parts, we only recommend this HOP-up unit for the technically proficient as it requires full assembly and does not include a HOP-up rubber or HOP-up nub. That said, the RetroArms CNC Rotary HOP-Up Chamber Gen.2 for M4/AR-15 AEG is widely regarded as one of the best options out there for the pros, and when set up properly, it has the potential to outrange anything else on site!

If you're looking for an upgraded AEG motor with the best price-to-performance ratio, you're looking for the Warhead Industries Base Brushless Motor! This brushless motor was conceived as a more affordable alternative to the legendary Warhead CNC Black Brushless Motor, boasting similar performance at an unbeatable price point. This, the long shaft variant, is designed for standard M4/AR-15, SMG-5, G3 and P90 AEGs.

Like the Warhead CNC Black motor used in Bolster Armouries builds, the Base boasts an ESC (electronic speed control) module which protects your battery, provides low-voltage cutoff and regulates speed to keep the immense power of the Base under control. The primary difference between the Base and the CNC Black is that the base uses a cast aluminium housing instead of a CNC machined one and the stator is wound via machines while the CNC Black is hand-wound.

The advantages of running a brushless motor are numerous, the most important of which is a far higher torque to weight ratio than conventional motors. The lack of brushes means there is less to go wrong and the motor is far quieter when running, guaranteeing a longer lifespan of smooth running performance. That said, these motors are intended for highly upgraded setups so we only recommend them for those who are confident working on AEG internals. If your custom-built beast needs an equally beastly motor to drive it, the Warhead Base Brushless Motor; Short Shaft is one of the best choices out there!

If you're jealous of GBB users running the superb Crazy Jet inner barrel, the Maple Leaf Hot Shot HOP-Up Bucking for AEG will level the playing field! This HOP-up bucking is designed for use with standard AEG HOP-up units paired with Maple Leaf's GBB/VSR type Crazy Jet inner barrel, boasting a wedge-shaped concave contact patch with nubs on either side to encourage consistent BB chambering.

While the Hot Shot Bucking may work with other GBB/VSR type inner barrels, it is not compatible with standard AEG inner barrels. Multiple degrees of hardness are available, with an option for almost any BB weight and muzzle energy combination. If you want the performance benefits of the Crazy Jet barrel with your AEG, the Maple Leaf Hot Shot HOP-Up Bucking is essential!

If you're jealous of GBB users running the superb Crazy Jet inner barrel, the Maple Leaf Hot Shot HOP-Up Bucking for AEG will level the playing field! This HOP-up bucking is designed for use with standard AEG HOP-up units paired with Maple Leaf's GBB/VSR type Crazy Jet inner barrel, boasting a wedge-shaped concave contact patch with nubs on either side to encourage consistent BB chambering.

While the Hot Shot Bucking may work with other GBB/VSR type inner barrels, it is not compatible with standard AEG inner barrels. Multiple degrees of hardness are available, with an option for almost any BB weight and muzzle energy combination. If you want the performance benefits of the Crazy Jet barrel with your AEG, the Maple Leaf Hot Shot HOP-Up Bucking is essential!

If you're jealous of GBB users running the superb Crazy Jet inner barrel, the Maple Leaf Hot Shot HOP-Up Bucking for AEG will level the playing field! This HOP-up bucking is designed for use with standard AEG HOP-up units paired with Maple Leaf's GBB/VSR type Crazy Jet inner barrel, boasting a wedge-shaped concave contact patch with nubs on either side to encourage consistent BB chambering.

While the Hot Shot Bucking may work with other GBB/VSR type inner barrels, it is not compatible with standard AEG inner barrels. Multiple degrees of hardness are available, with an option for almost any BB weight and muzzle energy combination. If you want the performance benefits of the Crazy Jet barrel with your AEG, the Maple Leaf Hot Shot HOP-Up Bucking is essential!

If you're jealous of GBB users running the superb Crazy Jet inner barrel, the Maple Leaf Hot Shot HOP-Up Bucking for AEG will level the playing field! This HOP-up bucking is designed for use with standard AEG HOP-up units paired with Maple Leaf's GBB/VSR type Crazy Jet inner barrel, boasting a wedge-shaped concave contact patch with nubs on either side to encourage consistent BB chambering.

While the Hot Shot Bucking may work with other GBB/VSR type inner barrels, it is not compatible with standard AEG inner barrels. Multiple degrees of hardness are available, with an option for almost any BB weight and muzzle energy combination. If you want the performance benefits of the Crazy Jet barrel with your AEG, the Maple Leaf Hot Shot HOP-Up Bucking is essential!

If you're looking for an affordable way to spice up your build, the CYMA High Torque Neodymium Magnet Motor; Long Shaft is a great shout. This motor is the standard motor provided in CYMA's top-of-the-line Platinum E-Edition AEGs, a high torque motor powered by Neodymium magnets. Being a high-torque motor, this motor is ideal for DMR builds requiring stronger springs and CQB builds seeking improved trigger response but is easily fast enough to give most AEGs a significant ROF boost!

This version is the Long Shaft model, designed for M4/AR-15, P90, SMG-5 (not the -K model) and G3 AEGs and includes a pre-installed D-type pinion gear constructed from steel. The pinon spring is also included and the motor is pre-wired for spade connectors, meaning there is no need to break out the soldering iron to install it. If you're looking for a snappier trigger, building a DMR or seeking an increase in rate of fire, the CYMA High Torque Neodymium Magnet Motor; Long Shaft is a great affordable option!

If you plan to upgrade your M4/AR-15, SMG-5 or G3 AEG with a high-end MOSFET filled to the brim with programmable features, the Perun MOSFET V2 Hybrid, Rear Wired is what you want! This optical MOSFET/ETU system replaces your conventional trigger contacts with optical sensors, improving trigger response and reliability while adding an absolute litany of programmable fire mode and MOSFET functions.

Fire mode options include burst modes of varying duration, reconfigurable fire selector positions, semi-automatic only, DMR/sniper delay, binary trigger and two-stage trigger. The V2 Hybrid also offers adjustable trigger sensitivity, adjustable active braking, pre-cocking with spring release and DSG mode, a specific mode for Dual Sector Gear setups. Make no mistake, the V2 Hybrid is every bit as advanced as its rivals with the added benefit that all of the programming can be carried out using the fire controls of your AEG, with no need for PC or app connectivity!

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!

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!

If you want glowing BBs without making your primary any longer, the CYMA Tracer HOP-Up Chamber for M4/AR-15 AEGs is a great shout! This alloy rotary HOP-up chamber integrates a tracer module, just like more expensive alternatives with the option to use red or green tracer BBs. The set includes everything you need to complete the HOP-up chamber build, including the bucking and nub. 

This unit is powered by your AEG's battery through the balance cable, meaning it will only work with LiPo batteries unless you have something home-brewed in mind. The set includes 3 sets of wiring for use with 7.4V LiPo, 11.1V LiPo or custom battery solutions, all of which connect to the pre-wired connector on the HOP-up unit itself. 

While it is designed for use with the CM.097 series and other CYMA Platinum M4/AR-15 AEGs, this unit should work with most M4/AR-15 AEGs on the market, potentially requiring modifications to fit certain brands. Depending on your specific platform, fitting may also require modification to your receiver. As such, we only recommend this unit for those who are comfortable working on AEG internals. If this sounds like you, why not shave off length and weight from your CQB primary with the CYMA Tracer HOP-Up Chamber for M4/AR-15 AEGs?

If you're looking for an upgraded AEG motor with the best price-to-performance ratio, you're looking for the Warhead Industries Base Brushless Motor! This brushless motor was conceived as a more affordable alternative to the legendary Warhead CNC Black Brushless Motor, boasting similar performance at an unbeatable price point. This, the short shaft variant, is designed for AR36, Thompson, AUG and AK AEGs.

Like the Warhead CNC Black motor used in Bolster Armouries builds, the Base boasts an ESC (electronic speed control) module which protects your battery, provides low-voltage cutoff and regulates speed to keep the immense power of the Base under control. The primary difference between the Base and the CNC Black is that the base uses a cast aluminium housing instead of a CNC machined one and the stator is wound via machines while the CNC Black is hand-wound.

The advantages of running a brushless motor are numerous, the most important of which is a far higher torque to weight ratio than conventional motors. The lack of brushes means there is less to go wrong and the motor is far quieter when running, guaranteeing a longer lifespan of smooth running performance. That said, these motors are intended for highly upgraded setups so we only recommend them for those who are confident working on AEG internals. If your custom-built beast needs an equally beastly motor to drive it, the Warhead Base Brushless Motor; Short Shaft is one of the best choices out there!

If you're looking for an upgraded AEG motor with the best price-to-performance ratio, you're looking for the Warhead Industries Base Brushless Motor! This brushless motor was conceived as a more affordable alternative to the legendary Warhead CNC Black Brushless Motor, boasting similar performance at an unbeatable price point. This, the short shaft variant, is designed for AR36, Thompson, AUG and AK AEGs.

Like the Warhead CNC Black motor used in Bolster Armouries builds, the Base boasts an ESC (electronic speed control) module which protects your battery, provides low-voltage cutoff and regulates speed to keep the immense power of the Base under control. The primary difference between the Base and the CNC Black is that the base uses a cast aluminium housing instead of a CNC machined one and the stator is wound via machines while the CNC Black is hand-wound.

The advantages of running a brushless motor are numerous, the most important of which is a far higher torque to weight ratio than conventional motors. The lack of brushes means there is less to go wrong and the motor is far quieter when running, guaranteeing a longer lifespan of smooth running performance. That said, these motors are intended for highly upgraded setups so we only recommend them for those who are confident working on AEG internals. If your custom-built beast needs an equally beastly motor to drive it, the Warhead Base Brushless Motor; Short Shaft is one of the best choices out there!

If you're looking for an upgraded AEG motor with the best price-to-performance ratio, you're looking for the Warhead Industries Base Brushless Motor! This brushless motor was conceived as a more affordable alternative to the legendary Warhead CNC Black Brushless Motor, boasting similar performance at an unbeatable price point. This, the short shaft variant, is designed for AR36, Thompson, AUG and AK AEGs.

Like the Warhead CNC Black motor used in Bolster Armouries builds, the Base boasts an ESC (electronic speed control) module which protects your battery, provides low-voltage cutoff and regulates speed to keep the immense power of the Base under control. The primary difference between the Base and the CNC Black is that the base uses a cast aluminium housing instead of a CNC machined one and the stator is wound via machines while the CNC Black is hand-wound.

The advantages of running a brushless motor are numerous, the most important of which is a far higher torque to weight ratio than conventional motors. The lack of brushes means there is less to go wrong and the motor is far quieter when running, guaranteeing a longer lifespan of smooth running performance. That said, these motors are intended for highly upgraded setups so we only recommend them for those who are confident working on AEG internals. If your custom-built beast needs an equally beastly motor to drive it, the Warhead Base Brushless Motor; Short Shaft is one of the best choices out there!

If you're the techy type or want to move to Deans connectors for improved electrical efficiency, the Amass Deans/T-Plug Connector is calling your name! Available in male or female, these high-quality Amass branded connectors provide a strong connection and ultra-low resistance, ideal for Airsoft AEGs, RC vehicles, Drones and other electronics hobbies.

As it pertains to Airsoft, the Male connector should be on the gun side and the Female on the battery side. Make sure you pay attention to polarity when installing either of these and if you're unsure, consult a tech!

If you're the techy type or want to move to Deans connectors for improved electrical efficiency, the Amass Deans/T-Plug Connector is calling your name! Available in male or female, these high-quality Amass branded connectors provide a strong connection and ultra-low resistance, ideal for Airsoft AEGs, RC vehicles, Drones and other electronics hobbies.

As it pertains to Airsoft, the Male connector should be on the gun side and the Female on the battery side. Make sure you pay attention to polarity when installing either of these and if you're unsure, consult a tech!

If you have a damaged wire, snapped motor connector or just want to improve your electric conductivity then this pack is ideal.

If you've got motor issues, the Delta Armory Standard AEG Motor; Long Shaft is the most affordable replacement on the market! This is the standard Delta Armory motor with a long motor shaft, meaning it is compatible with M4/AR-15, P90, SMG-5 and G3 AEGs.

The pinion gear is a "type O", meaning it is compatible with aftermarket type O pinion gears and both the pinion gear and pinion spring are pre-installed. If you're in desperate need of a replacement motor and don't want to part with a chunk of cash, the Delta Armory Standard AEG Motor; Long Shaft is your best bet!

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.

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!

If you seek more accuracy or range from your AEG, the Prometheus HOP-up Tensioner for AEGs will help you achieve it! Supplied as a pack of two tensioners, you can choose between a "Bridge" style design with a central groove designed to reduce side-to-side deviation and thus, enhance accuracy, or a "Flat" style design intended to achieve maximum range. 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!