Bolt Carrier Group

This 9mm AR Bolt Carrier Group (BCG) comes fully assembled and ready to drop into most 9mm AR platform rifles and pistols. The FailZero 9mm BCG is compatible with both lowers designated for Glock or Colt magazines. All critical parts are coated with EXO...

Phase 5s Mil-spec AR-15 bolt carrier features a heat treated and chrome lined inner with a black phosphate coating. The complete bolt carrier group includes cam pin, firing pin, gas key, and bolt. All bolts are HPT/MPI tested.Features :Black Phosphate...

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 complete bolt-and-carrier group easily drops into a standard mil-spec AR-15 upper, and its ready to shoot. Batch magnetic particle inspected bolt gives long service life. Bolt and carrier feature a matte black phosphate finish that resists heat,...

Rise Armament Bolt Carrier Group, .223/5.56,Product Type: Bolt Carrier Group

The Rosco Melonited Bolt Carrier Groups are designed to meet the modern-day carbine shooters requirements. They have also balanced input from their consumers and military end users in order to bring you the product you need, not just the one they want to...

These 5.56 / 300 BLK Bolt Carrier Groups are Phosphate Coated with Chrome Lined Gas Key & Bolt Channel, Full-Auto rated, properly staked, and the bolts are Matched to the barrel. Their Rosco Phosphate Bolt Carrier Groups are designed to meet the...

This high quality bolt carrier group is a valuable addition to your AR15 build.Features :M16-cut carrierMachined from 8620 Tool Steel (Carrier) and 9310 Steel (Bolt)Carrier has forward assist serrationsBlack Nitride Finish - advanced lower friction...

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...

Your Bolt Carrier Group is one of the most critical parts of your build. Don't buy an imitation. This is the Spike's Tactical Lightweight BCG with Nickel Boron Coating.Features :Nickel Boron Coating Inside and Out (Bolt, Carrier, and Gas Key)Laser...

This BCG is designed to operate with either 6.5 Grendel or Hornadys new 6mm ARC. Will not work with CMMG MkW platform. It is designed for standard AR variants.Features :CALIBER: 6.5 Grendel/6mm ARC

The LBE Nickel Boron Complete BCG includes the firing pin, retaining pin, cam pin, extractor and bolt gas rings. Made in the USA.Features :Fits AR-15Complete NIB BCGMade in the USA