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...
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...