Anderson AR-15 5.56 M-16 Nickel Boron Bolt Carrier Group

Description

## Anderson Manufacturing AR-15 / M-16 Nickel Boron Bolt Carrier Group no Logo

The Anderson AR-15 / M 16 / M4 Complete Nickel Boron Bolt and Carrier Group (BCG) is the perfect addition to your AR-15 platform rifle. The Nickel Boron coating on both the carrier and bolt provide enhanced durability and smoother operation. The carrier is made from 8620 steel for superior strength and the bolt is made from 9310 steel for maximum reliability. The 5.56 Bolt and Bolt Carrier Assembly comes complete with cam pin, firing pin, and firing pin retainer. This BCG is perfect for use with AR 15 platform calibers .223 / 5.56.

**Anderson Nickel Boron BCG Features:**

– Includes Cam Pin, Firing Pin and Firing Pin Retainer
– Used for [AR 15](https://daytonatactical.com/products/16-magpul-rifle-kit-15-keymod-assembled-with-80-lower) Platform Calibers .223 / 5.56
– Total weight 9.3888 ounces
– M-16 Full Auto complete Bolt Carrier Group
– Nickel Boron Finished
– 9310 Steel Bolt
– MPI Bolt (Magnetic Particle Inspected)
– Grade 8 Hardened Fasteners
– Key Staked per Mil Spec
– Black Extractor Insert
– Made in the USA
– SKU: B2-K630-AB00

**WARNING:** This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. For more information: [**www.P65Warnings.ca.gov**](https://www.p65warnings.ca.gov/)

The bolt carrier group is the heart of the AR-15’s direct impingement operating system. It contains the bolt, bolt carrier, firing pin, cam pin, and firing pin retaining pin — all the components that chamber, fire, extract, and eject each round. Anderson Manufacturing BCGs are machined to mil-spec dimensions, ensuring compatibility with standard AR-15 and AR-10 upper receivers and barrels from any manufacturer. Bolts are produced from Carpenter 158 steel and magnetic particle inspected (MPI) before assembly to detect surface and subsurface defects. Carriers are machined from 8620 steel and heat treated to mil-spec hardness. Finish options across the Anderson lineup include phosphate for standard mil-spec corrosion resistance, nickel boron for improved lubricity and easier cleaning, and nitride for a harder, more corrosion-resistant surface. A full-auto profile carrier is standard across the Anderson BCG lineup and is compatible with all semi-automatic AR-15 lower receivers. For builders assembling an AR-15 from components or for owners replacing a worn BCG, an Anderson Manufacturing BCG machined to mil-spec tolerances cycles predictably across standard carbine, mid-length, and rifle-length gas systems when paired with the correct caliber barrel.