Wilson Combat 5.56 NATO Mil-Spec Full-Auto AR-15 Bolt Carrier Group

This 5.56 NATO AR-15 Full Auto Bolt Carrier Group is another precision quality part from Wilson Combat. The bolt is machined Carpenter 158 hardened steel to prevent wear and tear while still remaining flexible enough to prevent cracking. Featuring a parkerized finish on the outside and chrome lined gas key inside, this bolt carrier group will work in any 5.56 rifle, but it’s designed for full-auto, suppressed, or short barrel rifles.

Features:

• 5.56 
• Mil-Spec
• Carpenter 158 bolt
• 8620 Steel Carrier
• 4140 Extractor
• Properly staked grade 8 gas key screws
• Parkerized 
• High Pressure Tested