Description
One Horse M16 bolt carrier group is built for AR15 rifles chambered in 5.56/.223 Remington and .300 Blackout. This nitride-finished carrier group uses Mil-Spec construction with a properly staked gas key for consistent operation. Materials include a 9310 tool steel bolt and an 8620 AQ steel carrier, with heat treatment and inspection steps aimed at reliable function.
Key features
- 9310 tool steel bolt
- 8620 AQ steel carrier
- Full Mil-Spec heat treatment with MPI (magnetic particle inspection)
- Salt bath nitrided bolt carrier and cam pin
- Staked gas key with Grade 8 fasteners
- Spring insert and O-ring installed on bolt extractor, S7 extractor
- Back of lugs chamfered for reliability, forward assist serrations
- Full auto compatible
Construction
| Part Type | M16 Bolt Carrier Group |
|---|---|
| Caliber | 5.56/.223 Remington, .300 Blackout |
| Finish | Full nitride |
| Materials | 9310 tool steel bolt, 8620 AQ steel carrier |



