This adapter allows you to run HPA on your VFC M4 or M4 variant

A modular base, with gas valve and feed lips prefitted (you only need to donate a VFC M4 gas router).

Fits all VFC M4, including standard 416 -- does not fit the 416D (the one with the very flat M4 magazine well - please see our dedicated VFC 416D adapter)

The magazine catch area of this adapter is adjustable, and comes with three shims allowing you to adjust nozzle to gas router seal. We test each adapter in a VFC 416 before shipping, and prefit the shim that provides us the best performance.

The gas router for this adapter is made from injection moulded rubber, to the standard VFC spec and dimensions, meaning you can use a factory or aftermarket VFC M4 router should you wish.

We utilise a non VFC valve with very high flow. This has allowed us to build a far more reliable adapter that is capable of high FPS and sustained full auto.

Includes one set of spare feed lips, and magazine catch shims labelled 1 to 3, along with all screws required to fit any of our modular magwell bases.

US Style HPA Fitting as Standard (most common fitting across industry - compatible with all AIRTAC HPA equipment)