Mitchell Defense Enhanced AR-10 .308 WIN/7.62 NATO Bolt Carrier Group 9310 Bolt Black. 308 Win and 7.62 NATO platforms. A nitride-treated 9310 MPI-tested bolt ensures strength and reliability while the 8620 carrier provides smooth cycling and consistent lockup. The billet extractor with O-ring improves case control under heavy recoil and the chrome-plated firing pin enhances long-term durability. Designed to function reliably in a variety of rifle configurations this BCG is ideal for large-frame duty rifles precision builds and high-volume shooting. Specifications for Mitchell Defense Enhanced AR-10 .308 WIN/7.62 NATO Bolt Carrier Group: Manufacturer: Mitchell Defense Color: Black Finish: Nitride Caliber: 7.62x51mm NATO .300 Winchester Magnum Gun Make: AR Platform Gun Model: AR-10 Features of Mitchell Defense Enhanced AR-10 .308 WIN/7.62 NATO Bolt Carrier Group Nitride-treated 9310 bolt for strength in .308/7.62 NATO systems 8620 carrier for consistent lockup and smooth cycling Billet extractor with O-ring for improved case control Chrome-plated firing pin for durability Reliable performance across precision and duty-grade AR-10 builds Package Contents: Mitchell Defense Enhanced AR-10 .308 WIN/7.62 NATO Bolt Carrier Group What firearm models does the manufacturer say Mitchell Defense Enhanced AR-10 .308 WIN/7.62 NATO Bolt Carrier Group is compatible with? The manufacturer suggests that Mitchell Defense Enhanced AR-10 .308 WIN/7.62 NATO Bolt Carrier Group is compatible with AR-10Mitchell Defense 614001: Enhanced AR-10 .308 WIN/7.62 NATO Bolt Carrier Group 9310 Bolt Black