The Wilson Combat Bolt Carrier Assembly (brand part no. TR-BCA-LM-PNIB) has its bolt face and dimensions machined for 5.56 and is finished in nickel boron, giving the bolt carrier group a slick surface that resists carbon buildup and cleans up quickly.

Key Specifications

• Bolt face and dimensions machined for .223 Rem/5.56 NATO
• Nickel boron finish
• Complete bolt carrier assembly with an M16/M4-profile carrier and a properly staked gas key
• Carpenter 158 steel bolt with a machined ejector and S7 extractor
• 11-inch overall length
• Shipping weight of approximately 0.75 lb
• Package dimensions of approximately 3.5 x 3.9 inches (width x height)
• Ships as a complete, ready-to-install bolt carrier assembly

Frequently Asked Questions

What does the nickel boron finish do? It gives the BCG a slick surface that resists carbon fouling and wipes clean more easily than a standard phosphate finish.

What caliber is this built for? .223 Rem/5.56 NATO.

What is the bolt made from? Carpenter 158 steel, with a machined ejector and S7 tool steel extractor.

Buy the Wilson Combat Bolt Carrier Assembly, 5.56, Nickel

Order this bolt carrier group from our Wilson Combat lineup, browsable in our full AR bolt carrier groups selection, with fast, insured shipping from our Lubbock, Texas gun shop.