Aero Precision APRH308186 .308 Bolt Carrier Group Black Nitride

In the realm of big-bore rifle builds, precision and reliability are paramount. Enter Aero Precision’s .308 / 7.62 Bolt Carrier Group—a masterpiece engineered for those who demand excellence from their firearms. This high-quality BCG is not just a component; it is the heart of your rifle's firing mechanism.

The carrier itself is machined from robust 8620 tool steel, ensuring durability under the most demanding conditions. Coupled with a bolt crafted from case-hardened 9310 steel, this group promises resilience where it matters most. Both elements feature a Black Nitride finish—an advanced low-friction coating that significantly reduces maintenance by minimizing lubricant requirements and simplifying cleaning procedures.

Aero Precision has left no detail unattended in its quest for perfection. The gas key, constructed from reliable 4130 steel and affixed with Grade 8 hardware, is properly staked to ensure steadfast performance during operation. For added convenience in handling malfunctions or rapid fire scenarios, forward assist serrations have been incorporated into the design.

The firing pin does not escape scrutiny either; machined from durable 8740 steel and hard chrome coated, it provides dependable ignition shot after shot. To further bolster reliability, each bolt undergoes Magnetic Particle Inspection (MPI) and High Pressure Testing (HPT), affirming its ability to withstand extreme pressures without compromise.

This multi-caliber bolt isn’t confined to just one type of ammo—it accommodates an array of cartridges including .308 Winchester/7.62x51mm NATO and .338 Federal among others derived from similar cases. With CNC-ground external surfaces post heat treatment for precision fitment alongside reduced diameter firing pin holes (.070"), every aspect speaks to meticulous craftsmanship aimed at delivering flawless function across various platforms.

Proudly bearing Aero Precision’s laser-engraved ‘A’ logo as a mark of authenticity and quality assurance—the complete package includes everything you need: bolt carrier assembly along with complete bolt set up comprising cam pins plus retaining pins—all designed specifically to complement AR-style uppers compatible with AR-10 rifles chambered in larger calibers such as these mentioned above!