| High-strength carrier group built for extreme wear resistance and longevity. Proudly Made in the USA. |
M16 Bolt Carrier Group With Billet Extractor in 5.56 Nitride
This M16 bolt carrier group is chambered for 5.56 and finished in black nitride, a treatment that reduces surface friction across the carrier and bolt assembly. The billet extractor is built to support positive, consistent casing extraction during repeated cycling. As a full-mass M16-profile carrier group, it suits builders assembling or upgrading AR-platform rifles and carbines, and it is proudly made in the USA.
Before purchasing, confirm 5.56 chambering aligns with your barrel, and verify fitment with your upper receiver and gas system. If you prefer a different surface treatment, compare the polished nickel boron version of this carrier group.
Bolt carrier groups are a wear item, so plan for regular cleaning and lubrication. Keep spares on hand with the extractor assembly kit or refresh worn components with the AR15 BCG rehab kit.
Specifications
| Caliber | 5.56/.223 |
| Carrier | M16 style, machined from 8620 steel, heat treated, final grind before plating |
| Carrier Finish | Black nitride |
| Bolt | Machined from 9310 steel, heat treated, shot peened, MPI tested |
| Bolt Finish | Black nitride |
| Gas Key | Billet, machined from solid 4130 steel, Grade 8 fasteners, properly staked |
| Cam Pin | Machined from 4140 steel, heat treated, black nitride |
| Extractor | Billet, machined from solid 4140 steel, heat treated, shot peened, phosphate coated |
| Extractor Insert | Included |
| O-Ring | Viton O-ring included |
| Firing Pin | Machined from 8640 steel, black nitride |
| Testing | Magnetic Particle Inspected (bolt) |
| Origin | Made in the USA |
Frequently Asked Questions
It's a full-mass M16-profile carrier group in 5.56 with a black nitride finish. The assembly includes the M16 8620 steel carrier, a 9310 steel bolt, a billet 4130 steel gas key, a 4140 steel cam pin, a billet 4140 steel extractor, an included extractor insert, a Viton O-ring, and an 8640 steel firing pin.
It's a full-mass M16-profile carrier group chambered for 5.56, suited to builders assembling or upgrading AR-platform rifles and carbines. Before purchasing, confirm the 5.56 chambering aligns with your barrel and verify fitment with your upper receiver and gas system.
Both the carrier and bolt have a black nitride finish, a treatment that reduces surface friction across the assembly. If you prefer a different surface treatment, you can compare the polished nickel boron version of this carrier group.
Yes. The bolt is machined from 9310 steel, heat treated, shot peened, and Magnetic Particle Inspected (MPI). The gas key is billet 4130 steel with Grade 8 fasteners and is properly staked. The entire carrier group is proudly made in the USA.
Bolt carrier groups are a wear item, so plan for regular cleaning and lubrication. Keep spares on hand with the extractor assembly kit, or refresh worn components with the AR15 BCG rehab kit. Orders ship in 2-3 business days.
Specifications
| Caliber | 5.56 |