Andro Corp Phosphate AR15 Bolt Carrier Group

Ensure ultimate reliability for your rifle build with the Andro Corp Phosphate AR15 Bolt Carrier Group. Engineered to exacting military specifications, this full-auto profile BCG is High Pressure Tested (HPT) and Magnetic Particle Inspected (MPI) to guarantee flawless performance and durability under heavy fire.

Constructed from premium heat-treated alloys and featuring a long-lasting Nitride finish on critical wear components, this bolt carrier group delivers smooth cycling, corrosion resistance, and exceptional strength. The gas key is sealed with Permatex aviation gasket sealer, torqued to 55 ft-lbs, and pneumatically staked for uncompromised gas efficiency.

• High-Strength Carrier & Bolt: Machined from an 8620 alloy full-auto profile carrier and a precision-machined 9310 alloy bolt that is carburized, case-hardened, shot-peened, and Nitrided.
• Proven Inspection: 100% High Pressure Tested (HPT) and Magnetic Particle Inspected (MPI) for maximum structural integrity.
• Duty-Grade Extraction: Features a 4140 tool steel extractor, AMS6440/52100 pin, 5-coil spring (393,000 PSI max tensile strength), 80 Durometer insert, and a high-temp Viton (FKM) O-ring.
• Rock-Solid Gas Key Assembly: 4130 chromoly gas key sealed with Permatex aviation gasket sealer, torqued to 55 ft-lbs, and pneumatically staked with Grade 4037 socket cap screws.
• Heavy-Duty Components: S7 shock-resistant tool steel ejector, precision-ground 8740 hard-chrome plated firing pin, and a heat-treated 4340 chromoly cam pin.