Auction is for one each these are cotter pins for the bolt carrier group for Colt rifle.

Complete 9mm Bolt Carrier Group for Ar15. Ramped for standard hammer Nitride / Melonite low friction durable finish. Compatible with Glock and Colt magazines.

Coated bolt carrier group for the AR15, .308, M16 and more by Cryptic Coatings.

Made in USA. Bolt is made of Mil-spec Carpenter 158 steel, Shot peened, High pressure tested and Mag Particle Inspected. Gas key is machined

If you are looking for a bolt carrier group for sale, Surplus Ammo has what you need. Shop with us and get the best bolt carrier group on the market today!

Find great deals on eBay for bolt carrier group and 5.56 barrel. Shop with confidence.

Brownells is your source for Bolt Carrier Groups,Bolt Parts at Brownells parts and accessories. Shop our vast selection and save!

Buy In Stock Rock River Arms Complete AR-15 Rifle Bolt Carrier Group

Blemished with uneven finish and tool marks, will not affect function ; Complete 9mm bolt carrier group assembly; Nitride finish; Superior to chrome lined and

Finally Advanced Armament Corp. is proud to make available the IBCG (Improved bolt carrier group)! Full-Auto M16 style carrier: Coated with a patented Nickel Boron