JP Enterprises Enhanced AR Bolt Carrier Assembly

Enhanced metallurgy and optimized geometry make this a must-have backup part if not an outright replacement. Specifications for JP Enterprises Enhanced AR Bolt Carrier Assembly: Manufacturer: JP Enterprises Color: Silver Fabric/Material: Steel Cartridge: 6.8mm Remington SPC Bolt Material: 9310 Steel Carrier Material: 8620 Steel Caliber: .277 Caliber Features: Superior grade steel metallurgy for greater durability Shot peen surface treatment for greater service life Improved geometry to reduce case wear and extractor fatigue Package Contents: JP Enterprises Enhanced AR Bolt Carrier Assembly