M16 BCG, NICKEL BORON

$37.36 $46.7

Description BCG Includes: High Pressure Tested (HPT) Magnetic Particle Inspected (MPI) Carrier machined from 8620 alloy, full auto profile, heat treated, Nickel Boron 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 ACI15BCGNB 796258933763

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