Bolt Carrier Groups

This EXO Nickel Boron coated firing pin provides a permanently lubricious surface for extreme durability and increased wear and corrosion resistance.

San Tan Tactical Enhanced BCG Black Nitride 6MM ARC San Tan Tactical believes in America, and the heritage upon which this great nation was built. They only use the highest quality machine's in conjunction with the highest quality American made...

This BCG is designed to operate with either 6.5 Grendel or Hornady's new 6mm ARC. Will not work with CMMG MkW platform. It is designed for standard AR variants. CMMG, AR15 Bolt Carrier Group, 6.5 Grendel or 6MM ARC, Black CALIBER: 6.5 Grendel/6mm...

M16 Full Auto Style for increased mass and lock time.This BCG is precision machined from 8620 steel with a shot peened bolt manufactured from Carpenter 158 and Magnetically Particle Inspected. LanTac USA LLC, 556 ENhanced BCG, Gold, TiN...

High quality components and precise manufacturing make LuthAR parts ideal for maintaining and upgrading firearms. The durability, reliability and excellent build quality of these parts will ensure years of service you can count on. Luth-AR, Bolt Carrier...

High quality components and precise manufacturing make San Tan Tactical parts ideal for maintaining and upgrading firearms. The durability, reliability and excellent build quality of these parts will ensure years of service you can count on. San Tan...

Sons of Liberty Gun Works Bolt Carrier Group 223 Remington/556NATO - Manganese Phosphate Finish Sons of Liberty goes to show that in order to make the best products in the industry, you don't have to add bells and whistles. It takes consistently...

Bauer Precision 5.56 Helical, One Piece Gas Ring   This gas ring is designed specifically for use with .223 caliber and 5.56 caliber ARs and is made from durable, high-quality materials. It is used to seal the gas in the gas tube and prevent...

Bauer Precision Gas Ring Set (3) Included is 3 Gas Rings for a standard AR15 bolt. 

This Bolt Carrier Group (BCG) comes fully assembled and ready to drop into most mil spec M16, M4 or AR15 upper receivers. All critical parts are coated with EXO Nickel Boron technology that provides permanent dry lubricity, extreme durability and...

This 7.62x39 Bolt Carrier Group (BCG) comes fully assembled and ready to drop into most mil-spec upper receivers chambered in 7.62x39. All critical parts are coated with EXO Nickel Boron technology that provides permanent dry lubricity, extreme...

High quality components and precise manufacturing make FailZero parts ideal for maintaining and upgrading firearms. The durability, reliability and excellent build quality of these parts will ensure years of service you can count on. FailZero, M16/M4...