Midwest Industries MI-BCG-556EH Enhanced Black Nitride Bolt Carrier Group

Assembled Bolt Carrier Group for AR-15/M16. Properly torqued with Grade 8 fasteners. Properly staked to ensure reliability. Machined from solid 4140 bar stock, heat treated and shot peened. O-Ring...

The Enhanced Bolt Carrier Group for AR15/M16 platform weapons was designed to minimize carrier tilt and reduce friction inside the upper receiver by relocating key bearing surfaces. All materials,...

DSI Complete AR-15 Bolt Carrier Group

Fits most AR-15 Style Rifles for .223, 5.56 or .300 Blackout

100% Made in the USA with a lifetime warranty.