Mercury Precision AR-15 5.56/.223, HPT/MPI Tested, Full Auto Profile, 9310 Steel Nitride Bolt Carrier Group

Unleash precision with the Mercury Precision AR-15 Bolt Carrier Group: HPT/MPI tested for ultimate durability, crafted from rugged 9310 steel, and finished in a sleek nitride coating. Experience reliability and performance in each round.

Step up your AR-15’s performance with the Mercury Precision Bolt Carrier Group, engineered for the discerning shooter. Crafted for compatibility with 5.56 NATO, .223 Rem, .300 Blackout, and .350 Legend, this BCG is versatile and ready to adapt to your needs. The meticulous construction from 9310 alloy steel for the bolt head and 8620 alloy steel for the body provides durability and reliability. The Nitride finish improves lubricity, corrosion resistance, and carbon resistance, providing a sleek, glossy black surface that withstands the toughest conditions.

Engineered for Excellence:
Mercury Precision takes no shortcuts with this BCG, employing High Pressure Testing (HPT) and Magnetic Particle Inspection (MPI) to provide performance and safety. The 9310 steel bolt head, known for its high core hardness and fatigue strength, is built to endure intense firing cycles. The 8620 steel body is carburized to increase surface hardness, offering exceptional case and core toughness. This combination helps your BCG operate excellently, round after round, in the harshest environments.

Versatility and Functionality:
Designed with the modern shooter in mind, this BCG features forward assist cuts, providing seamless integration with your AR-15’s forward assist for reliable bolt engagement. Whether you’re running a standard or full auto setup, this BCG is fully compatible, offering the flexibility to adapt to various shooting scenarios. The direct impingement gas system efficiently cycles gas from the barrel through the gas tube into the BCG, reducing recoil and improving shooting accuracy.

Why You Should Choose This BCG:
Invest in the Mercury Precision AR-15 Bolt Carrier Group for performance and reliability in each shot. With its robust construction, advanced nitride finish, and compatibility with a range of calibers and setups, this BCG is a top choice for serious shooters and builders. The meticulous testing and high-quality materials provide a component that improves your firearm’s functionality and lifespan. Elevate your AR-15 build with a BCG that delivers precision, durability, and adaptability—choose Mercury Precision for your next upgrade.