The Armaspec ARM711-223 Bolt Carrier Group 223/5.56 Nitride Stainless Steel AR15 is a mil-spec BCG designed to deliver smooth cycling and long-term reliability in your AR-15 platform. Built around a 9310 steel bolt and nitride-treated carrier, it offers a hardened surface that resists wear while maintaining a sleek, low-friction finish for consistent performance with .223 Remington, 5.56 NATO, and .300 Blackout chambers.

This bolt carrier group is ideal as a direct drop-in upgrade or replacement for standard AR-15 uppers, supporting range use, training, and general-purpose shooting where dependable function is essential. A properly staked gas key helps maintain gas system integrity over high round counts, and the M16-profile carrier adds durability for extended use. The combination of thoughtful machining and nitride treatment reflects Armaspec’s focus on practical innovation and solid craftsmanship in AR components.

Key Features:

• Manufacturer: Armaspec
• Model: ARM711-223 Bolt Carrier Group
• Caliber: .223 Rem / 5.56 NATO / .300 Blackout
• Platform: AR-15
• Bolt Material: 9310 Steel
• Bolt Finish: Salt Bath Nitride
• Carrier Profile: M16
• Gas Key: Staked
• High Pressure Tested: Untested
• Magnetic Particle Inspected: Yes
• Weight: 12 oz
• Length: 7.85 in
• Width: 2.45 in
• Height: 2.35 in