Z-Parts Steel MK16 DD GOV 10.3 inch Outer Barrel for Umarex (VFC) M4 GBB Airsoft Rifle GBB Pistol External Parts Extensive testing has demonstrated that

Extensive testing has demonstrated that a recoil booster is not necessary for most weapons

Strong Recoil blow back action surpass other brand of MEU Airsoft GBB

it features a storage compartment with a sliding access plate at the base

Suitable For VFC FABARM STF12 Gas Shotgun Airsoft Guns

Airsoft Artisan 6" Handguard Set For SIG Airsoft MCX Virtus (Dark Earth)

Z-Parts Steel MK16 DD GOV 10.3 inch Outer Barrel for Umarex (VFC) M4 GBB Airsoft Rifle GBB Pistol External Parts Extensive testing has demonstrated thatZ Parts Steel MK16 DD GOV 10. 3 inch Outer Barrel for Umarex (VFC) M4 GBB Airsoft Rifle Steel Construction Airsoft Outer Barrel With Dummy Gas Block Suitable For Umarex (VFC) M4 Gas Blow Back GBB Airsoft Rifle Length: 245mm