| Ultra-slick coating for improved reliability and effortless cleaning. Proudly Made in the USA. |
M16 Nickel Boron BCG With Billet Extractor in 5.56
This M16 bolt carrier group pairs a billet extractor with a polished Nickel Boron coating in 5.56. The slick surface finish reduces friction during cycling and makes cleaning easier after extended range sessions, making it suitable for high-round-count builds and shooters who run their rifles hard.
The full-mass M16-profile carrier is a common choice for AR-15 builders working with standard 5.56 platforms. Before completing your build, confirm caliber and chamber match your barrel and upper assembly, inspect and lubricate before first use, and verify headspace when pairing components from separate sources. If you prefer a different finish, the M16 BCG with Nitride coating offers another option.
Keep spares on hand with the Extractor Assembly Kit and the AR15 BCG Rehab Kit. All components are American-made and available for direct purchase or white-label manufacturing partnerships.
Specifications
| Caliber | 5.56/.223 |
| Carrier | M16 Style, Machined from 8620 Steel, Heat Treated, Final Grind Before Plating, Polished Nickel Boron Coating |
| Bolt | Machined from 9310 Steel, Heat Treated, Shot Peened, Magnetic Particle Inspected (MPI), Polished Nickel Boron Coating |
| Gas Key | Billet, Machined from Solid 4130 Steel, Grade 8 Fasteners, Properly Staked, Polished Nickel Boron Coating |
| Cam Pin | Machined from 4140 Steel, Heat Treated and Ground, Polished Nickel Boron Coating |
| Extractor | Billet, Machined from Solid 4140 Steel, Phosphate Coated |
| Extractor Insert | Included |
| O-Ring | Viton O-Ring Included |
| Firing Pin | Machined from 8640 Steel, Hard Chrome Plated |
| Profile | Full-Mass M16 |
| Coating | Polished Nickel Boron |
| Origin | Made in the USA |
Frequently Asked Questions
It's a complete full-mass M16-profile BCG in 5.56/.223, including the polished Nickel Boron carrier, 9310 steel bolt, billet gas key, 4140 cam pin, billet phosphate-coated extractor, extractor insert, Viton O-ring, and hard chrome-plated firing pin. It arrives assembled and ready to inspect and lubricate before installation.
The polished Nickel Boron coating gives a slick surface finish that reduces friction during cycling and makes cleaning easier after extended range sessions. It's applied to the carrier, bolt, gas key, and cam pin, making this BCG suited for high-round-count builds and shooters who run their rifles hard.
The full-mass M16-profile carrier is a common choice for standard 5.56 AR-15 platforms. Before completing your build, confirm the caliber and chamber match your barrel and upper assembly, and verify headspace when pairing components from separate sources. Inspect and lubricate before first use.
Yes. The bolt is machined from 9310 steel, heat treated, shot peened, and Magnetic Particle Inspected (MPI). The carrier is machined from 8620 steel and heat treated, with a final grind before plating. The billet gas key uses Grade 8 fasteners and is properly staked. All components are American-made.
Yes. You can keep spares on hand with the Extractor Assembly Kit, or restore a worn BCG with the AR15 BCG Rehab Kit. Both are American-made and available for direct purchase.
Orders ship in 2-3 business days, and free shipping is available on qualifying orders. This BCG is also backed by a 30-day money-back guarantee. If you prefer a different finish, the M16 BCG with Nitride coating is another option.
Specifications
| Caliber | 5.56 |