VFC MP5 to MP5 AEG HPA Adapter - 2026 Edition
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Updated 2026 edition with high-quality CNC MP5 magwell
This adapter lets you run your VFC MP5 on HPA, fed by any CYMA MP5 midcaps.
Requires a donor gas router from a VFC MP5 magazine. Valve and feed lips are provided.
We are releasing a VFC MP5 gas router in the next month, which will be provided free of charge (just pay shipping)
To fit the gas router, remove the 4 screws from the top of the adapter, lift the feed lips, place the gas router underneath, and refit the feed lips. Be careful not to over tighten the screws
You can run the adapter at 120-150PSI. We recommend 150PSI for this adapter due to its smaller internal volume.
The MP5 magwell has a rear shim held in by two screws. This can be removed to allow fitment of curved CYMA MP5 mid-caps. Leave it in place for straight MP5 mid caps.
We utilise a very high flow valve. This has allowed us to build a far more reliable adapter that is capable of high FPS and sustained full auto.
US Style HPA Fitting as Standard (most common fitting across industry - compatible with all AIRTAC HPA equipment)
DO NOT EXCEED 150PSI WITH ANY AIRSOFT HPA ADAPTER.
ALWAYS USE AIR REGULATED BY A SECONDARY REGULATOR (EG AT200, WOLVERINE STORM, POLARSTAR MRS).
CHECK YOUR PSI BEFORE CONNECTING AIR TO A HPA ADAPTER.
NEVER CONNECT OUR EQUIPMENT TO PAINTBALL AIR TANKS OR CO2 TANKS.
NEVER CONNECT OUR EQUIPMENT TO A TIPPMAN STYLE HPA LINE
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)
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.
MP5 HPA Adapter Info
- This magwell is made of CNC aluminium and cannot be damaged by BB strikes.
- Compatible with all CYMA MP5 Mid Caps (65 round metal, 120/130 round metal, Straight, Novritsch Straight, Bullet Window). Available Here
- BB Retention drops only 2 BBs when changing magazine
The feed tube shim fits under the feed tube. The rear shim is held in by two screws.
- Straight Magazines (Default Config) - Keep Shim In. Feed Tube spacer necessary on newer CYMA MP5 magazines
- Curved Long / Short Magazines - Remove rear shim. Keep Feed tube spacer in.
- If straight magazines will not feed with the rear shim and feed tube spacer installed, try removing the rear shim.
- In the very rare case short CYMA magazines do not fit your adapter, contact support@AIRTAC.me (we can solve this for you ASAP)
Compact MP5
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.
Run different mags with your adapter!
This adapter is also compatible with the following modular magwells. Its a great way to change up your playstyle and aesthetic!| Magazine Type | Compatibility | Magwell |
|---|---|---|
| M4 | ✅ | View |
| M4 (Angled) | ❌ | View |
| MP5 | ✅ | View |
| Shotshell (Pistol Style) | ✅ | View |
| Shotshell (Rifle Style) | ❌ | View |
| Remote Feed | ✅ | View |
| Compact Drum | ✅ | View |