Blitzkrieg Tactical LR308 BCG Black Nitride Dual Ejector
The .308 Bolt Carrier Group can be used with most uppers on the market as it has the serrations for a 3 o'clock style forward assist and a pronounced shoulder for the DPMS style forward assist.
These are the parts you need if you accidentally bought, or have a spare AR-15 parts kit you are using you build out your AR-10. These parts will make that parts kit function the way it should.
The continuous top rail allows you to mount iron sights, optics and any other accessories without additional rail sections. The Magpul M-Lok system allows users to customize the handguard with rail sections and direct mount accessories.