The Airtac VFC PPSH to M4 HPA Adapter gives you the option to run your VFC PPSH on HPA with M4 AEG Magazines. It also comes pre-fitted with feed lips, a valve and gas router so, you don’t need to use any donor parts. No assembly is required.
Airtac utilises a very high-flow valve to make this adapter more reliable. The high-flow valve also makes this adapter capable of sustained full-auto fire and high FPS.
This adapter has also been tested in a VFC PSSH by Airtac to ensure consistent performance.
Plug and Play
This adapter is ready to go out of the box. Valve, feed lips, and gas router are already fitted to the adapter. You do not need to use any donor parts.
No assembly is required.
Airtac Adapters
Each of Airtac’s adapters are designed to be low profile while reaching field limit FPS. They design and manufacture all of their products to the highest standard. Where applicable this adapter features:
Lifetime Warranty
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/compatibility 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.
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
Please note only 2 screws are required to attach the modular magwell, some adapters may have more
Key Information
Airtac use a US Foster Fitting as standard. This is the most common airsoft HPA fitting. EU fittings can be purchased separately.
Some of Airtac’s HPA adapters have a smaller internal volume than gas magazines. Because of this, you will need to use a PSI of 90–150.
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, Airtac 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.
Run Different Mags with Your Adapter
This adapter is also compatible with the following modular magwells. It's a great way to change up your playstyle and aesthetic!