Prometheus Perfect Metal Chamber NEO (Complete Kit) H&K Airsoft Guns 1 mags will work in

1 mags will work in the 4

Includes a 300 round hicap magazine (M4 style)

This unique works great as a carrying case or a back carry style holster

Sniper grade airsoft BBs for its very heavy weight

GEN3 SRT 3X-9X variable magnification Rubber Armored Scope with a 40mm objective lens

Prometheus Perfect Metal Chamber NEO (Complete Kit) H&K Airsoft Guns 1 mags will work inPrometheus Perfect Metal Chamber NEO (M4 Hopup Chamber, with Pressure Arm and Gear). This is a replacement hop up chamber for all M4 type AEG airsoft guns. It's a very high quality metal made chamber with all the parts to make it work better than your original. Made in Japan for highly upgraded guns, custom guns, etc. We recommend the Prometheus Purple bucking for use with this. M4 Hopup Chamber, with Pressure Arm and Gear