BHA Precision AR-15 5.56 / 300 Left Handed Black Nitride Complete Bolt Carrier Group - BCG

BHA Precision AR-15 5.56 Black Nitride Left-Handed Complete Bolt Carrier Group – Left Side Eject

Engineered for left-handed shooters who demand top-tier performance, the BHA Precision Left-Handed BCG brings uncompromising reliability and smooth operation to AR-15 platforms chambered in 5.56 NATO, .223 Remington, and .300 Blackout. Featuring true left-side ejection and a Black Nitride finish, this complete bolt carrier group is purpose-built for mirror-configured uppers, ensuring flawless cycling and a more intuitive shooting experience for southpaws.

Constructed from premium materials and precision-machined to mil-spec tolerances, this BCG delivers reduced friction, superior corrosion resistance, and long-lasting durability in any environment.

Carrier Group:

• Case-hardened 8620 steel carrier body

• Black Nitride finish for enhanced wear resistance and low-maintenance operation

• True left-hand configuration with left-side ejection

• Gas key made from 4130 steel, staked with Grade 8 hardware into a precision-milled valley

• 4340 hardened steel cam pin

• Centerless-ground 8740 steel firing pin with hard chrome coating

Bolt Assembly:

• CNC-ground bolt made from 9310 case-hardened steel

• Black Nitride coated and shot peened for strength and longevity

• 4340 extractor with Mil-Spec spring & O-ring combo

• Fully Magnetic Particle Inspected (MPI) and High Pressure Tested (HPT)

Fits: Left-handed AR-15/M4-style rifles chambered in 5.56 NATO, .223 Rem, and .300 Blackout

Proudly made in the USA.
Now available at BattleHawk Armory—finally, a BCG that works as hard as lefties do.