Andro Corp Nitride AR15 Bolt Carrier Group

Description

Andro Corp Nitride AR15 Bolt Carrier Group

High Pressure Tested (HPT)

Magnetic Particle Inspected (MPI)

Carrier machined from 8620 alloy, full auto profile, heat treated, Nitrided

Gas Key machined from 4130 chromoly steel alloy, heat treated and Nitrided

Bolt precision machined from 9310 alloy; carburized/case hardened, shot peened and Nitrided

4140 Tool steel Extractor alloy, hardened and Nitrided

Extractor Pin, AMS6440/52100 Bearing grade steel retaining pin

5 coil, Extractor Spring, ASTM Grade A 228 wire stock, stress relieved, Tensile Strength of 393,000 PSI Max, 80 Durometer Per AMS-R-6855 black insert

Extractor Spring O-Ring, Viton (FKM) Fluoropolymer Elastomer

S7 shock resistant tool steel alloy Ejector, hardened, shot peened per ASTM B851/SAE AMS2430, manganese phosphate

ASTM Grade A 228 wire stock Ejector Spring, heat treated, stress relieved Tensile Strength of 376,000 PSI Minimum

Gas Rings, Steel Corrosion Resistant Per AMS 5906 X3

Firing Pin, precision machined 8740 steel alloy, heat treated, precision ground & hard chrome plate

Firing Pin Retaining Pin, carbon steel ASTM A510, heat treated & manganese phosphate

Socket Cap Head Screw, steel, grade 4037 per ASTM, heat treated & manganese phosphate 2x

Gas Key is installed with Permatex aviation gasket sealer, torqued to 55-foot pounds, pneumatically staked

Cam Pin, precision machined 4340 chromoly steel alloy, heat treated and Nitrided