




AIRTAC ANGLED HPA ADAPTER - 2 in 1 GLK/AAP and HI-CAPA
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BOTH THE GLK/AAP AND HI-CAPA MODULAR TOPS ARE INCLUDED WITH THIS HPA ADAPTER
The perfect HPA adapter for CQB and speedsofters! The angled adapter runs the M4 magazine parallel to your wrist for a smaller vertical profile.
Manufactured from impact-resistant Nylon 12 and injection-moulded polycarbonate
Fitting a Gas Magazine
To fit a gas magazine, use a 1.5mm hex key and unscrew the four screws on the inside of the M4 magwell (they are arranged in a square pattern).
Fit the included O-ring to the top of the gas block of the adapter, in the O-Ring groove
You will then be able to access the screw hole needed to screw the adapter onto your gas magazine.
Package Contents
- GLK Modular Top
- GLK Single Stack
- Hi-Capa Modular Top
- Hi-Capa Single Stack
- Angled Adapter Base
- 2*Magazine O-Rings
AIRTAC Adapters
Each of our adapters is designed to be low profile while reaching field limit FPS. We design and manufacture all of our products to the highest standard, and do not charge extra for ‘premium’ features. Where applicable this adapter features:- Lifetime Warranty (Our adapters have to be built to last)
- Injection moulded or CNC magwell that is impervious to BB strikes at point blank skirmish FPS.
- CNC or Injection moulded Feed Tubes and Magazine Catches for lifelong durability.
- Tuneability/compatability via integrated shim systems. Our adapters are designed to cope with 'airsoft tolerances'
- Gas Routers injection moulded from NBR, 1:1 with the factory gas router.
- Seal Test
- Firing test, for feed and recoil (we have over 100 guns on site for testing)
Compact MP5
M4 Adapter Information
- Injection moulded from polycarbonate, this magwell is near indestructible!
- Compatible with most airsoft M4 magazines.
- We recommend EPM1/EPM1s magazines as they have excellent fitment and strong springs.
- Magazines advertised as Fast Feed such as the original EPM or Amarok magazines will also work well
- BB retention means only 2-3 BBs are dropped when changing mag
- A swappable rear shim is included
Key Information
- We use a US Foster Fitting as standard. This is the most common airsoft HPA fitting. EU fittings can be purchased separately.
- Some of our HPA adapters have a smaller internal volume than gas magazines. Because of this, you will need to use a PSI of 90–150.
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If you need higher FPS, you can:
- Fit a tighter barrel
- Use a longer barrel
- Use heavier BBs
- Fit an improved hop bucking
- If your replica has an NPAS fitted, we advise opening it fully.
- Do not exceed 150 PSI. Many airsoft guns will not see an increase in FPS past this, as the hammer may struggle to depress the valve correctly.
- Insert the HPA adapter with your bolt / slide locked back to minimise pressure against the nozzle loading arm.

