FM Products 9mm Bolt Carrier and Heavy Buffer, 6.5 oz, w/.308 Carbine Recoil Spring, Black, FM-9BCG-HB-RS

C.C. Each kit contains a complete Premium FM9 Bolt Carrier Group BCG .308 Carbine Recoil Spring and a Heavy Buffer to ensure proper function on your 9MM Glock Style P.C.C. Build. The 6.4oz Heavy Buffer is the perfect weight to ensure reliable feeding of any blow-back operated P.C.C. 3.