Upgrade your AR-15 with the Armaspec .223/5.56 Bolt Carrier Group — a Mil-Spec BCG built for longevity and consistent performance. The nitride surface treatment increases hardness and reduces friction so the carrier runs smoothly and resists wear; it’s also easier to clean and maintain than many untreated components. Machined to Mil-Spec dimensions, this BCG drops into any standard AR-15 upper and supports .223 Remington, 5.56 NATO, and .300 Blackout chambers with a purpose-built bolt and proper clearances.
A staked gas key prevents loosening under high round counts and ensures dependable gas alignment shot after shot. Whether you’re assembling a new build or replacing a worn carrier, the Armaspec nitride BCG offers a balance of durability, reliability, and ease of upkeep. Pick one up at AR-15 Discounts for a dependable upgrade to your AR platform.
Specifications
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Compatibility / Caliber: .223 Rem / 5.56 NATO / .300 Blackout
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Finish: Nitride
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Dimensions: Mil-Spec (AR-15 compatible)
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Bolt: .223/5.56/.300 BLK compatible bolt
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Gas Key: Staked gas key
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Intended Use: Replacement BCG for AR-15 platforms, builds, and upgrades
| Bolt Material | 9310 Steel |
|---|---|
| Finish | Salt Bath Nitride |
| Cartridge Compatibility | 0.223 |
| Carrier Profile | M16 |
| High Pressure Tested | Untested |
| Magnetic Particle Inspected | Magnetic Partical Inspected |
| Platform | AR-15 |
| Bolt Finish | Salt Bath Nitride |
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