Alex Pro Firearms AR-10 Bolt Carrier Group .308 Nickel Boron

The Alex Pro Firearms AR-10 Bolt Carrier Group .308 Nickel Boron (RPUP046) is a precision-engineered component designed for shooters who demand reliability in intermediate-to-long-range rifle platforms. It is suitable for law enforcement, military, and civilian marksmen operating .308 Winchester and 7.62×51 NATO systems. This bolt carrier group is essential for managing the complete firing cycle under sustained fire and demanding field conditions.

Constructed with a Carpenter 158 bolt that is shot peened and heat-treated for superior hardness and impact resistance, this BCG is paired with a full-auto rated SAE 8620 carrier body, also heat-treated to mil-spec standards. Both components feature a nickel boron plating that reduces friction and minimizes fouling buildup, extending the service life compared to standard finishes. This finish is known for its durability and ease of cleaning.

Operators running modern .308 platforms—from DMR setups to precision service rifles—will benefit from the reliability and performance of this BCG. At 1.14 lbs, it maintains proper reciprocating mass for reliable feeding and ejection across a wide spectrum of ammunition types and barrel lengths without sacrificing handling characteristics. This makes it an excellent choice for various shooting applications, including precision rifle courses and competitive shooting.