AERO AR15 5.56 BCG W/9310 BLK NTRD

Aero AR15 5.56 BCG w/9310 Bolt – Black Nitride

The Aero Precision AR15 5.56 BCG with 9310 Bolt and a sleek black nitride finish is a rugged, reliable upgrade for any AR-15 rifle chambered in 5.56 NATO, .223 Remington, or .300 Blackout. Precision-machined and heat-treated for durability, this bolt carrier group is built to perform in any shooting environment—whether you're at the range, in competition, or in the field.

Built for Long-Term Reliability

Featuring a 9310 steel bolt that’s shot-peened and magnetic particle inspected (MPI), this BCG delivers exceptional strength, wear resistance, and reliability under high round counts. The black nitride coating enhances corrosion protection and reduces friction, offering smoother cycling and easier cleaning.

Key Features

• Caliber Compatibility: Works with 5.56 NATO, .223 Remington, and .300 Blackout
• 9310 Steel Bolt: Stronger and more fatigue-resistant than traditional Carpenter 158
• Black Nitride Finish: Provides excellent wear resistance, corrosion protection, and smooth operation
• Full-Auto Rated Carrier: M16-profile for durability and enhanced strength
• Properly Staked Gas Key: Ensures a secure seal for consistent gas flow
• High-Pressure Tested (HPT) & Magnetic Particle Inspected (MPI): Guarantees bolt integrity
• Complete BCG: Includes bolt, carrier, cam pin, firing pin, and retaining pin

Why 9310 Steel and Nitride Matter

The 9310 steel bolt offers increased toughness and fatigue resistance over standard materials, making it ideal for demanding builds and high-volume shooters. Paired with the nitride finish, this BCG offers reduced friction for smoother cycling and less fouling—so your rifle stays cleaner, longer.

Aero Precision Quality

Aero Precision is trusted for their exceptional build quality and attention to detail. Every component in this BCG is carefully machined, finished, and tested to meet strict standards, ensuring your rifle performs reliably, shot after shot.

Upgrade Your AR with Aero Precision

The Aero AR15 5.56 BCG w/9310 Bolt – Black Nitride is a dependable, high-performance choice for shooters who demand smooth cycling, easy maintenance, and long-lasting quality. Whether you’re building a new rifle or upgrading your current setup, this BCG is a rock-solid addition to any AR platform.