VFC M249 GBB HPA Adapter and AEG Box Conversion V2
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The V2 version of this adapter now uses a locking tab from a VFC Cassette, and as such, solving an issue where the locking tab would wear down. Additionally, the adapter no longer includes a box magazine interface plate. We recommend filing down the wings on your AEG box magazine if it doesn't fit your gun. This leads to a way nicer aesthetic.
This adapter allows you to convert your GBB M249 to HPA. You do not need to purchase their gas box magazine OR any of their mid caps. It is a 'from scratch' conversion and does not require any modification other than changing out the gas valve connector in the gas 'mag-well' of the gun.
All printed parts are in the same versatile strong material we use for our HPA adapters. All fittings / connectors are branded and hence can be provided with certificates of conformity should you require (this is also why the kit is a bit pricey)
If you require an EU HPA fitting, you can add this to your cart
Installation:
Remove the magazine catch from a genuine VFC cassette magazine, and install it onto the adapter (this is the sprung catch part on the underside of the magazine).
Unscrew the gas fitting on your M249 and screw in the M10 8mm push fitting (it is the only threaded piece in the kit), then push the small piece of macro-line into the M10 push fitting.
Push the right angled connector into smaller piece of macroline
Push the macro line and US fitting into the right angled connector - Your VFC M249 is now HPA!
You can now connect AEG spec M249 drum / box magazines to your M249
Insert the printed M249 magazine into your gun (it will be a tight fit the first time)
Remove the M4 magazine top from your M249 AEG box, and connect its BB feed Bowden spring to the feed clips on the printed M249 magazine.
SOUND CONTROL FROM THE BOX MAGS IS VERY INCONSISTENT AND WILL NOT LIKELY WORK, I SUGGEST USING A MORE EXPENSIVE INTELLIGENT AUTO WINDING BOX MAG, OR RUNNING A SWITCH TO YOUR TRIGGER :) THERE IS A SWITCH INSIDE YOUR M249 WHICH LETS THE GUN FIRE WITH 'EMPTY' MAG, PLEASE ENSURE YOU ACTUATE THIS
Use the two provided grub screws to gently bite down on the feed spring- Your VFC M249 will now feed from the box magazine!
Tested with A&K 1500 round box
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.
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.