Product Description

Complete M16 Bolt Carrier Group:

• Fully assembled Bolt Carrier Group; including the bolt, bolt carrier, gas key, firing pin, cam pin, and firing pin retaining pin
• Every Bolt is High Pressure Tested (HPT) with a proof load
• Following the High Pressure Test, every Bolt is Magnetic Particle Inspected (MPI)
• Not stamped with HPT or MPI
• The Bolt is machined from Carpenter 158 steel
• Following machining, the Bolt is heat treated and shot peened
• Installed extractor includes red o-ring with spring
• M16 Bolt Carrier is machined from 8620 steel and hardened
• Interior of Bolt Carrier Carrier Key & Bolt Carrier are chrome lined
• M16 Bolt Carrier will function in semi-auto or full-auto AR-15/M16
• Gas Key Screws are properly torqued and staked
• Bolt and Bolt Carrier feature a matte black mil-spec finish

SPECS: Bolt – Carpenter 158 steel, Magnetic Particle Inspected, High Pressure Tested. Carrier – 8620 hardened steel, M16.  Matte black phosphate finish.

Product Description

The Aero Precision .308 / 7.62 Bolt Carrier Group is the perfect firing mechanism for your big-bore rifle build. This high quality BCG features a mil-spec phosphate finish and now includes a laser engraved Aero Precision "A" logo!

Carrier Features:

• Billet carrier machined from 8620 steel and case hardened
• Now features laser engraved Aero Precision logo
• Mil-Spec phosphate coating
• Properly staked gas key
• Chrome lined gas key and firing pin channel
• Forward Assist serrations

Bolt Features:

• High pressure .308 bolt machined from 9310 steel and case hardened
• Multi-caliber bolt designed to function with .308, 7.62x51, 6.5 Creedmoor, .338 Federal and other .308 based cartridges.
• Shot peened
• HPT/MPI
• Extractor machined from 4340 steel with double o-rings and springs

BCG Includes:

• Bolt carrier
• Complete bolt
• Firing pin
• Cam pin
• Retaining pin

Product Description

Drop-In Assembly With Strength & Durability Features For Dependable Service

Complete, mil-spec assembly with bolt, bolt carrier, and firing pin ready to drop into the rifle or carbine upper of your choice. Features a shot-peened bolt for increased surface strength and durability, and an extractor booster to ensure reliable cycling during rapid semi-auto or full-auto fire. Each assembly is magnetic particle inspection tested to ensure it’s free from imperfections that can lead to premature failures. Properly staked gas key prevents gas leakage that can lead to short stroking. M16-style carrier on the black phosphate model has full-length shroud for tripping auto sear, so this carrier may be installed on full-auto law enforcement and military rifles.

SPECS: Steel, black parkerized finish. Fits mil-spec semi-auto and full-auto AR-15/M16 upper receiver chambered for .223/5.56mm.

Product Description

Allows Your 7.62x39 AR to Run the Right Way

The Brownells M16 7.62x39 Bolt Carrier Group offers AR-15 builders building a unique rifle chambered in the 7.62x39 cartridge with the final necessary component needed to get their gun running right.

The Brownells M16 7.62x39 Bolt Carrier Group features a bolt head that is fully machined from solid 9310 steel, which is then completed with a heat treatment and shot peening. The carrier is built using 8620 hardened steel.

• Features torqued and staked gas keys
• Extractor assembled with rubber insert and spring
• Checked thoroughly with magnetic-particle inspection
• Increased corrosion resistance with black-nitride finish

The Brownells M16 7.62x39 Bolt Carrier Group comes complete with a firing pin, cam pin and firing pin retaining pin, along with the bolt carrier, bolt and gas key.

Product Description

Each WMD bolt-and-carrier set is precisely machined from high-grade steel alloy to government M16 specs, then given WMD's proprietary NiB-X nickel boron coating that results in a super-smooth, harder-than-chrome surface. NiB-X reduces friction to the bare minimum and is impervious to corrosion and abrasion. The slick finish also keeps carbon from adhering, so clean up is much faster and easier than with standard parts. Ideal choice for 3-gun competitor sand other high-volume shooters. Available with a matching NiB-X coated hammer for the smoothest cycling. Also available as an M16 Bolt Carrier Group.

SPECS: Carrier – 8620 carbon steel. Bolt – Carpenter 158 steel alloy. Both have Nickel boron finish, silver. Extractor includes black buffer, black O-ring, and spring. Fits mil-spec AR-15/M16 upper receiver.M16 carrier available.

Product Description

A Purpose-Made Bolt for Your Pistol-Caliber Carbine

The Brownells 9mm AR-15 Bolt Carrier Group is specifically designed for use in pistol-caliber carbines, which are a growing trend in the AR-15 world. This bolt-carrier group allows AR builders to custom-make their own 9mm AR.

The Brownells 9mm AR-15 Bolt Carrier Group is constructed entirely from a single piece of steel billet and features a pinned weight that can be taken out for compatibility with different buffer systems.

• Compatible with both Glock and Colt magazines
• Features complete nitride treatment for reduced friction

The Brownells 9mm AR-15 Bolt Carrier Group also features a captured firing pin in order to prevent the possibility of slam fires.

Product Description

Engineered for Superb Reliability & Long Service Life in Pistol-Caliber ARs

The entire Faxon Firearms 9mm AR-15 Full-Mass Bolt / Carrier Group is machined from a single billet of mil-spec 8620 carbon steel. Even the integral gas "key" is machined as part of the carrier - no fasteners to worry about working loose. Faxon also designed the 9mm AR-15 Full-Mass Bolt / Carrier Group to be compatible with lower receivers that use Colt-style stick mags and those configured for Glock® pistol mags. It also has the correct shroud length to trip the auto sear on full-auto rifles; has no impact on function of semi-autos.

• Fully heat-treated for hardness & wear-resistance
• QPQ salt-bath Nitride coated for lubricity and corrosion resistance
• Easy-to-remove weight pinned in place can be removed for compatibility with all buffer systems
• 15 oz. wt

To avoid slam-fires, the 9mm AR-15 Full-Mass Bolt / Carrier Group’s firing pin is captured with a dedicated pin and spring. Extractor is easily serviced and contoured for consistent purchase on the case rim for reliable extraction.