M249 Fitment Kit

M249 Fitment Kit for Bull Craft Stoner 96 HPA Gearbox

Required when running a standard PolarStar F2 or Jack engine—this kit ensures proper fitment and function. If you're using the M249 variant of the F2 or Jack, you're already covered (this kit is included).

Kit Includes:

•     Bullet Valve
•     Plug Board
•     Trigger Switch (included as a backup in case your build lacks one)

Engineered for seamless integration and zero guesswork. Lock in compatibility, stay mission-ready.