Airsoft HPA

If you want to get the most out of your MK23, SSX23 or SSX303, the Airtac HPA Adapter for MK23 NBB Pistol; CYMA Shotgun Shell is the key. Designed for the ASG/STTI MK23, along with the Novritsch SSX23 and SSX303, this adapter is designed for US-spec HPA setup, feeding from 30rnd shotgun shell magazines from either CYMA or Golden Eagle.

HPA eliminates FPS fluctuation due to the "cooldown" effect, resulting in improved shot-to-shot consistency and improved accuracy down range, especially under rapid fire. This makes it a fantastic way to get the most out of NBB platforms, which are already whisper-quiet and honed for long-range shooting.

A shotgun shell adapter keeps your platform compact, allowing you to get low in the prone position and make optimal use of cover. It also keeps magazine capacity reasonable and sportsmanlike, which will hopefully allow you to run HPA at more restrictive sites, which often limit magazine capacity with HPA-tapped pistols and SMGs.

If you're hitting the field with a VORSK VMP-1 but need better rapid fire performance, the Airtac HPA Adapter for VMP-1; MP5 AEG Magazines is a great option. A pre-assembled HPA magazine adapter designed to feed from standard MP5/SMG-5 AEG magazines, this set requires a US-spec airline, regulator, air bottle and bottle regulator to get started.

The advantages of using HPA when performance is concerned include the elimination of FPS fluctuation due to the "cooldown" effect, resulting in improved shot-to-shot consistency and improved accuracy down range, especially under rapid fire. This adapter also increases magazine capacity with an MP5 mag on board, giving you more shots between reloads.

This adapter is a drop-in installation, but may require tuning to suit the specific MP5/SMG-5 AEG magazines you're using. Thankfully, the parts to tune are included in the set (see Airtac's Website for more details). If you want better rapid-fire accuracy, no cool-down and higher mag capacity from your VMP-1, this Airtac HPA Adapter is the key!

If you're revamping a version 3 gearbox-equipped AEG, the GATE ASTER II Bluetooth® EXPERT for AEG & HPA Version 3 Gearbox belongs inside! A cutting-edge advancement over the original Gate ASTER MOSFET, the ASTER II boasts several quality-of-life improvements, more customisation options than ever before and Bluetooth 5.2 connectivity built in, allowing you to change settings wirelessly on your smartphone or mobile device.

The ASTER II 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 using either the trigger and fire selector or the Gate Control Station App.

Other programmable options include adjustable pre-cocking and adjustable active braking; perfect for the techy types to set their primary up to suit practically any build objective, from high FPS DMR to a beastly high-speed DSG.

The ASTER II is compatible with any version 3 gearbox-equipped AEG and can also be used with HPA engines when paired with the aftermarket HPA Cable Set for the engine type (dual or single-solenoid). If you're ready to take your AEG to the next level of advanced functionality, the GATE ASTER II Bluetooth® EXPERT for AEG & HPA Version 3 Gearbox is waiting!

If you're rocking a VMP-2 but need better rapid fire performance and accuracy, the Airtac HPA Adapter for VMP-2; MP5 AEG Magazines is a great start! A pre-assembled HPA magazine adapter designed to feed from standard MP5/SMG-5 AEG magazines, this set requires a US-spec airline, regulator, air bottle and bottle regulator to get started.

The advantages of using HPA when performance is concerned include the elimination of FPS fluctuation due to the "cooldown" effect, resulting in improved shot-to-shot consistency and improved accuracy down range, especially under rapid fire. This adapter also increases magazine capacity with an MP5 mag on board, giving you more shots between reloads.

To install the adapter, modification to your VMP-2 is required, and tuning may be required to suit your specific MP5/SMG-5 AEG magazine design. See Airtac's Website for more information. Whether your VMP-2 is cutting corners at kissing distance or reaching out in a woodland environment, converting it for HPA pushes performance up to the next level!

If you're running HPA at a site which limits mag capacity, the Airtac HPA Adapter for VMP-1 / VMP-2; CYMA Shotgun Shell is a fine choice! Designed for either the VMP-1 SMG or its rifle sibling, the VMP-2, this adapter is designed for US-spec HPA setup, feeding from 30rnd shotgun shell magazines from either CYMA or Golden Eagle.

HPA eliminates FPS fluctuation due to the "cooldown" effect, resulting in improved shot-to-shot consistency and improved accuracy down range, especially under rapid fire. It also enhances cold-weather performance, meaning you can still run your VMP in winter, when all the green gas-fuelled VMPs are in hibernation.

A shotgun shell adapter keeps the VMP compact, allowing you to get low in the prone position and make optimal use of cover. It also keeps magazine capacity reasonable and sportsmanlike, which will hopefully allow you to run HPA at more restrictive sites, which often limit magazine capacity with HPA-tapped pistols and SMGs.

Please note: Tuning of the adapter for shell compatibility may be necessary due to the tolerance differences between shell manufacturers. 3 Different length feed tubes are included to allow for this.

If you need an affordable way to keep water on your person in the field, the 8Fields Tactical MOLLE 1L Water/HPA Bottle Carrier is ideal. This water bottle pouch is constructed from 1000D Nylon and features MOLLE webbing and velcro on the front and sides, allowing for patches and additional MOLLE pouches to be mounted where you see fit. The pouch itself mounts to MOLLE webbing, making it easy to mount wherever you need it, whether on a plate carrier, chest rig, belt or backpack. 

While it is designed for 1L water bottles, this pouch is also well-sized to fit 48ci HPA bottles (measuring 14 x 10cm approx) and is closed at the top using dual zips. You may even be able to poke your regulator and line through the zip without modification, though it may fit better with a hole carefully cut in the top. If you're in need of a more compact hydration solution or an affordable HPA bottle pouch, the MOLLE 1L Water/HPA Bottle Carrier from 8Fields Tactical is a fine choice!

If you need an affordable way to keep water on your person in the field, the 8Fields Tactical MOLLE 1L Water/HPA Bottle Carrier is ideal. This water bottle pouch is constructed from 1000D Nylon and features MOLLE webbing and velcro on the front and sides, allowing for patches and additional MOLLE pouches to be mounted where you see fit. The pouch itself mounts to MOLLE webbing, making it easy to mount wherever you need it, whether on a plate carrier, chest rig, belt or backpack. 

While it is designed for 1L water bottles, this pouch is also well-sized to fit 48ci HPA bottles (measuring 14 x 10cm approx) and is closed at the top using dual zips. You may even be able to poke your regulator and line through the zip without modification, though it may fit better with a hole carefully cut in the top. If you're in need of a more compact hydration solution or an affordable HPA bottle pouch, the MOLLE 1L Water/HPA Bottle Carrier from 8Fields Tactical is a fine choice!

If you need an affordable way to keep water on your person in the field, the 8Fields Tactical MOLLE 1L Water/HPA Bottle Carrier is ideal. This water bottle pouch is constructed from 1000D Nylon and features MOLLE webbing and velcro on the front and sides, allowing for patches and additional MOLLE pouches to be mounted where you see fit. The pouch itself mounts to MOLLE webbing, making it easy to mount wherever you need it, whether on a plate carrier, chest rig, belt or backpack. 

While it is designed for 1L water bottles, this pouch is also well-sized to fit 48ci HPA bottles (measuring 14 x 10cm approx) and is closed at the top using dual zips. You may even be able to poke your regulator and line through the zip without modification, though it may fit better with a hole carefully cut in the top. If you're in need of a more compact hydration solution or an affordable HPA bottle pouch, the MOLLE 1L Water/HPA Bottle Carrier from 8Fields Tactical is a fine choice!

If you run HPA and you need a convenient and modern way to affix your air tank to your rig, this is what you need! The Novritsch MOLLE HPA Tank Pouch is sized to fit 0.8L and 1L air tanks (90mm maximum diameter) and can be tightened down for a perfect fit via the 3 external straps and bungee cord at the top and bottom.

As it comes, the MOLLE HPA Tank Pouch mounts vertically but it can also be mounted horizontally using MALICE clips or Novritsch's own MOLLE strip clips. Available in a wide variety of spicy colour options, this air tank pouch can be a great way to add a stylish touch to your loadout with a practical and functional design as a bonus!

If you're kitting yourself out for HPA on a tight budget, the NUPROL Aluminium 48ci 3000PSI HPA Tank is a fine choice! Boasting a 48ci/ 0.8L capacity and capable of being pressurised to up to 3000PSI, this set includes an integral bottle regulator, but you will also need an airline and line regulator to complete the setup.

These tanks are marked with a manufacture date of 2026/0, UK Rho marks, and EU PI 0035 certification, making them compliant with both UK and European regulations. If you're ready for HPA, this NUPROL Aluminium 48ci 3000PSI HPA Tank is a fantastic entry point!

If you're searching for an advanced MOSFET for your version 2 gearbox-equipped AEG, the GATE ASTER II Bluetooth® EXPERT & Quantum 2 Trigger for AEG & HPA V2 Gearbox is ideal. A cutting-edge advancement over the original Gate ASTER MOSFET, the ASTER II boasts several quality-of-life improvements, more customisation options than ever before and Bluetooth 5.2 connectivity built in, allowing you to change settings wirelessly on your smartphone or mobile device.

The ASTER II 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. Other programmable options include adjustable pre-cocking and adjustable active braking; perfect for the techy types to set their primary up to suit practically any build objective.

This set also includes the Gate QUANTUM 2 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 2 trigger offers 250 trigger sensitivity options via the ASTER II's optical sensors and also includes a grub screw to provide over-travel adjustment. Constructed from CNC-machined aluminium, the Quantum 2 looks great and allows the ASTER™ to take full advantage of its optical trigger sensors and tune the trigger feel to suit your exact requirements.

The ASTER II is compatible with any version 2 gearbox-equipped AEG and can also be used with the Gate PULSAR Single-Solenoid HPA Engine if you add the ASTER II-specific HPA cable. If you're ready to turn your Airsoft gun into a Space Gun, the GATE ASTER II Bluetooth® EXPERT & Quantum 2 Trigger for AEG & HPA V2 Gearbox is calling your name!

If you're searching for an advanced MOSFET for your version 2 gearbox-equipped AEG, the GATE ASTER II Bluetooth® EXPERT & Quantum 2 Trigger for AEG & HPA V2 Gearbox is ideal. A cutting-edge advancement over the original Gate ASTER MOSFET, the ASTER II boasts several quality-of-life improvements, more customisation options than ever before and Bluetooth 5.2 connectivity built in, allowing you to change settings wirelessly on your smartphone or mobile device.

The ASTER II 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. Other programmable options include adjustable pre-cocking and adjustable active braking; perfect for the techy types to set their primary up to suit practically any build objective.

This set also includes the Gate QUANTUM 2 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 2 trigger offers 250 trigger sensitivity options via the ASTER II's optical sensors and also includes a grub screw to provide over-travel adjustment. Constructed from CNC-machined aluminium, the Quantum 2 looks great and allows the ASTER™ to take full advantage of its optical trigger sensors and tune the trigger feel to suit your exact requirements.

The ASTER II is compatible with any version 2 gearbox-equipped AEG and can also be used with the Gate PULSAR Single-Solenoid HPA Engine if you add the ASTER II-specific HPA cable. If you're ready to turn your Airsoft gun into a Space Gun, the GATE ASTER II Bluetooth® EXPERT & Quantum 2 Trigger for AEG & HPA V2 Gearbox is calling your name!

If you're gearing up for an HPA setup, this is essential! The Airtac Superflex HPA Airline measures 40 inches / 101.6cm in overall length, fitted with a US-type/Foster 22-2 connector for wide compatibility. This airline is designed for flexibility and agility, keeping length to an effective 40 inches for the perfect balance between mobility and snag reduction.

Its large internal bore ensures ample airflow for high-rate-of-fire setups while reducing the chances of airflow being restricted should the airline be compressed. If you're about to hit the field with your HPA setup, don't forget the Airtac Superflex HPA Airline!

If you need improvements in efficiency and capacity for your EU-series or AAP-01, the Airtac HPA Mag Adapter for M4/AR-15 AEG Magazines; EU-series/AAP-01 is the way to go! Made from an injection-moulded polycarbonate blend, this adapter is designed to mount to a stripped-down EU-series or AAP-01 GBB magazine and allow your pistol to feed from M4/AR-15 AEG magazines and be fuelled by High Pressure Air (HPA).

The advantages of using HPA when performance is concerned include the elimination of FPS fluctuation due to the "cooldown" effect, resulting in improved shot-to-shot consistency and improved accuracy down range, especially under rapid fire. With this adapter on board, you also get a considerable capacity boost, allowing your EU-series or AAP-01 to be used as a primary and stay competitive with rifle builds. If you're going speedy with your EU-series or AAP, the Airtac HPA Mag Adapter for M4/AR-15 AEG Magazines; EU-series/AAP-01 is the advantage you need!

If you're a realism enjoyer becoming HPA-curious, this will convert you! The Kythera SA Mechanical HPA Engine Conversion Kit from PolarStar Airsoft is a mechanical HPA conversion kit designed as a drop-in replacement for the cylinder group of standard gearboxes. Choose your variant to match your chosen gearbox.

Being a mechanical system means you don't need a battery, don't need to avoid rain and get to enjoy the feel of a trigger system designed to simulate real steel single-stage triggers, complete with an authentic, tactile break and reset. This variant of the Kythera is locked to semi-automatic fire only, making it ideal for those who prefer a precise double-tap to a burst.

While you don't get the programmable trigger and electronic tuning options of the JACK™ or F2™ engines, the Kythera SA is ideal for milsim skirmishers looking for a leap in performance, DMR builders seeking the easy route to a reliable high FPS build or CQB specialists seeking a realistic yet incredibly snappy trigger. If you seek next-level performance and realism in equal measure, the PolarStar Kythera SA belongs in your build!

If you're after HPA performance with professional-level tuning options, the PolarStar Airsoft F2™ HPA Engine Conversion Kit is the way to go! An updated version of PolarStar's incredible Fusion™ engine, the F2™ is a dual-solenoid engine, allowing tuning of both the loading speed and air volume via the included digital FCU (fire control unit).

The set is designed to drop into either a V2 (M4/AR-15) or V3 (AK-47/74) gearbox (depending on the variant you choose), including everything you need other than your airline, regulator, air bottle and FCU battery.

Offering a variable rate of fire up to a stunning 30 rounds per second, adjustable velocity and a vast range of programmable options, including alternative fire modes, anti-stiction mode, "closed bolt" mode and "AEG" mode, the F2™ engine is the right choice for experienced HPA users looking to move up to a more complex, high-performance engine. If this sounds like you, the F2™ HPA Engine Conversion Kit belongs in your build!

If you're planning to run your EU series, AAP-01 or Lancer Tactical CTHULHU on HPA, the Lancer Tactical HPA Adapter for M4/AR-15 AEG Magazines; EU Series & AAP-01 will do the trick! This HPA adapter is designed for EU series GBB pistols and should also fit the Action Army AAP-01 and Lancer Tactical's radical CTHULHU pistol. Designed to allow standard M4/AR-15 AEG mags to be used along with a High Pressure Air (HPA) power source, you can kiss goodbye to the "cooldown" effect and limited magazine capacity with this adapter on your gat!

The set includes both an EU and US HPA connector but you will need an airline, HPA bottle and regulator to run this adapter. The advantages of using HPA when performance is concerned include the elimination of FPS fluctuation due to the "cooldown" effect, resulting in improved shot-to-shot consistency and improved accuracy down range, especially under rapid fire. If you're taking your playstyle in a speedy direction, this adapter will change your game!

If you're planning to run your EU series, AAP-01 or Lancer Tactical CTHULHU on HPA, the Lancer Tactical HPA Adapter for M4/AR-15 AEG Magazines; EU Series & AAP-01 will do the trick! This HPA adapter is designed for EU series GBB pistols and should also fit the Action Army AAP-01 and Lancer Tactical's radical CTHULHU pistol. Designed to allow standard M4/AR-15 AEG mags to be used along with a High Pressure Air (HPA) power source, you can kiss goodbye to the "cooldown" effect and limited magazine capacity with this adapter on your gat!

The set includes both an EU and US HPA connector but you will need an airline, HPA bottle and regulator to run this adapter. The advantages of using HPA when performance is concerned include the elimination of FPS fluctuation due to the "cooldown" effect, resulting in improved shot-to-shot consistency and improved accuracy down range, especially under rapid fire. If you're taking your playstyle in a speedy direction, this adapter will change your game!

If you're planning to run your EU series, AAP-01 or Lancer Tactical CTHULHU on HPA, the Lancer Tactical HPA Adapter for M4/AR-15 AEG Magazines; EU Series & AAP-01 will do the trick! This HPA adapter is designed for EU series GBB pistols and should also fit the Action Army AAP-01 and Lancer Tactical's radical CTHULHU pistol. Designed to allow standard M4/AR-15 AEG mags to be used along with a High Pressure Air (HPA) power source, you can kiss goodbye to the "cooldown" effect and limited magazine capacity with this adapter on your gat!

The set includes both an EU and US HPA connector but you will need an airline, HPA bottle and regulator to run this adapter. The advantages of using HPA when performance is concerned include the elimination of FPS fluctuation due to the "cooldown" effect, resulting in improved shot-to-shot consistency and improved accuracy down range, especially under rapid fire. If you're taking your playstyle in a speedy direction, this adapter will change your game!

This is a full O-ring replacement set for the centreline version of the PolarStar Airsoft F2™ HPA Engine Conversion Kit. If you want to make sure all the seals are up to par, this is a great way to refresh them on the cheap. It's also a great bit of kit to keep in your toolbox just in case of an emergency, or you accidentally lose an o-ring during installation or maintenance.

The PolarStar Braided Air Line is a high-quality 36-inch HPA hose designed for reliable performance and unrestricted movement during play. It is made from flexible rubber and reinforced with a durable nylon braided outer sheath, which reduces the risk of kinking and twisting while allowing the line to move naturally with the player.

This air line is the standard hose supplied with PolarStar air rigs and is well-suited for most chest rig, belt, or backpack-mounted HPA tank setups. The braided construction adds additional strength without compromising flexibility and manoeuvrability, helping protect the line during aggressive/agile movement and long-term use.

It comes supplied with foster-style quick disconnect fittings pre-installed on the hose. The line is ready to integrate into most HPA systems. Please note that a separate male QD fitting for the engine or regulator may be required, depending on your setup.

If you're ready to rock HPA and crank your game up a notch, the Trinity Armament ALPHA M4/AR-15 HPA Rifle w/GATE PULSAR D & TITAN II Bluetooth® is ready for you! A complete HPA build based on full metal ARCTURUS externals with Gate's PULSAR D dual solenoid HPA engine and TITAN II Bluetooth ETU on board, the ALPHA offers FPS adjustment between 250 and 650 FPS using 0.20g BBs and rate of fire adjustment between 1 and 21 RPS.

Also present are Gate's Bolt Catch Sensor and Magazine Sensor, allowing you to turn these features on using the Gate Control Station App via Bluetooth and run the ALPHA like a GBBR, a realistic experience without equal. Having this level of versatility in a single platform really is incredible!

As much as we love AEGs, attaining this level of performance, along with the option to go from a DMR to a high rate of fire setup without changing parts, is simply not possible. Naturally, you'll need an HPA bottle, airline and regulator to get busy with the ALPHA, but once set up, you'll never be outgunned!

If you love to be at the cutting edge of Airsoft technology, the GATE TITAN™ II Bluetooth® MOSFET V2; Expert Firmware [HPA] belongs in your next build! This is the next generation of the superb GATE TITAN™, boasting innumerable improvements over the original, the most notable of which is its direct Bluetooth 5.2 Low Energy compatibility. This means you no longer need the Gate Blu-link or USB Link to customise your settings; simply download the Gate Control Station app and you can access the TITAN™ II's most advanced settings via the included Expert Firmware.

Like the original TITAN™, the TITAN™ II allows you to adjust trigger sensitivity, tune firing behaviour and configure advanced firing modes 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 love to be at the cutting edge of Airsoft technology, the GATE TITAN™ II Bluetooth® MOSFET V2; Expert Firmware [HPA] belongs in your next build! This is the next generation of the superb GATE TITAN™, boasting innumerable improvements over the original, the most notable of which is its direct Bluetooth 5.2 Low Energy compatibility. This means you no longer need the Gate Blu-link or USB Link to customise your settings; simply download the Gate Control Station app and you can access the TITAN™ II's most advanced settings via the included Expert Firmware.

Like the original TITAN™, the TITAN™ II allows you to adjust trigger sensitivity, tune firing behaviour and configure advanced firing modes 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.