Nice piece of jewelry
A fully MIL-SPEC Nickel Boron coated AR-15 Bolt Carrier Group built to run hard, clean easy, and last. M16 cut carrier, Carpenter 158 steel bolt, magnetic particle inspected — everything correct, nothing cut short. 100% USA made.
| Caliber | .223 Remington / 5.56 NATO |
|---|---|
| Finish | Nickel Boron |
| Carrier Cut | M16 Cut |
| Carrier Material | 9310 Steel |
| Bolt Material | Carpenter 158 Steel |
| Extractor & Ejector | 4140 Steel — Nitride Coated |
| Cam Pin | 4140 Steel |
| Firing Pin | 8740 Steel — Hard Chrome Finish |
| Gas Rings | MIL-SPEC |
| O-Ring | MIL-SPEC |
| Inspection | Magnetic Particle Inspected (MPI) |
| Origin | 100% USA Made |
| Price | $159.99 |
Nickel boron is harder and has a lower coefficient of friction than phosphate. That means less heat buildup, less fouling adhesion, and a BCG that wipes clean in seconds rather than minutes. It runs reliably with or without lubrication — important for high-rate-of-fire applications like FRT builds where the BCG cycles under greater stress and frequency than standard semi-auto use.
Combined with an M16 profile carrier and fully MIL-SPEC internals, this BCG is one of the most capable drop-in upgrades available for any mil-spec AR-15 platform.
- weight is only 58 grams, under 3oz
-Length: 6 5/16"
-Diameter 1/2"
-This is the ONLY USA made gun smithing tool, gun cleaning tool, building tool, disable tool on the market.