The Aero Precision Pro 5.56x45mm Bolt Carrier Group is engineered to endure the toughest conditions, ensuring peak performance under the most extreme environments. Every component and manufacturing process is meticulously selected to enhance the durability and reliability of the bolt carrier group and its individual parts. Designed with longevity in mind, this bolt carrier group is built to withstand rigorous use, providing consistent, dependable service for every shooter. Whether you're in demanding tactical situations or simply pushing your firearm to its limits, the PRO 5.56x4.5mm Bolt Carrier Group is crafted to meet the highest standards of quality and performance.

The bolt is machined from 9310 steel for superior strength and performance
Shot-peened bolt improves resilience and longevity
The bolt has been MPI tested for reliability and strength
A proprietary flash-nitriding process ensures proper heat treatment of the bolt for enhanced durability
The cam pin is machined from 4140 steel for enhanced durability and performance
The cam pin is precision ground after heat treatment for optimal performance
Engraved indexing mark on the cam pin helps maintain proper alignment and easier reassembly
The cam pin is nitride for increased surface hardness, corrosion-resistance and durability
The extractor is machined from 4140 steel for added strength and longevity
Heat-treated extractor, designed for durability and high-performance handling under high-pressure conditions
Shot-peened extractor enhances durability and wear resistance
The extractor features a durable phosphate finish for enhanced wear resistance
The carrier is machined from 8620 steel for enhanced durability and strength
The M16 cut carrier is specifically designed for optimal performance
The carrier is finished with a nitride coating for added strength and corrosion-resistance
Critical surfaces are precision ground for optimal gas efficiency and reliability, ensuring smooth operation and maximum performance
The gas key is machined from hardened 4140 steel for added durability and performance
This component is torqued to specification using grade 8 hex fasteners for enhanced durability, including a securely mounted gas key
Properly staked to Mil-Spec standards, the gas key offers enhanced durability and performance
The gas key is nitride for increased hardness and corrosion-resistance
The ejector is machined from S7 tool steel for maximum durability and function
Ground from 8640 steel, the firing pin is known for its durability and resistance to wear, ensuring long lasting performance
The firing pin is nitride to ensure superior wear resistance and durability

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These items are controlled by the U.S. Government and authorized for export only to the country of ultimate destination for use by the ultimate consignee or end-user(s) herein identified. They may not be resold, transferred, or otherwise disposed of, to any other country or to any person other than the authorized ultimate consignee or end-user(s), either in their original form or after being incorporated into other items, without first obtaining approval from the U.S. government or as otherwise authorized by U.S. law and regulations.

WARNING: Handling firearms or firearms parts can expose you to lead and other petroleum products known to the State of California to cause cancer, birth defects, or other reproductive harm. Wash hands thoroughly after handling. For more information go to www.p65warnings.ca.gov (CA Health and Safety Code Section 25249.6).