Pistol Caliber Bolt Carrier Groups
A pistol-caliber carbine needs a bolt carrier built for its cartridge and operating system. These 9mm and other pistol-caliber BCGs come in blowback and radial-delayed designs, many with nitride finishes for reliable cycling and easy cleanup. Match yours to your lower and magazine type, whether you’re running a dedicated pistol-caliber lower or a conversion. Find matching pistol-caliber lower receivers, or check out complete 9mm conversion kits.
