AR15 BOLT REPAIR KIT

$67.5 $91.13

Description AR15 BOLT REPAIR KIT | HP/MPI | ANDRO CORP INDUSTRIES COMPLETE HP/MPI BOLT: – Bolt precision machined from 9310 alloy; carburized/case hardened & shot peened – Ultrasonically cleaned and Nitrided – Gas Rings, Steel Corrosion Resistant Per AMS 5906 – X3 – Extractor, machined 4140 Tool steel alloy, hardened and Nitrided – Extractor Pin, precision machined and ground AMS6440/52100 Bearing grade steel retaining pin – Ejector, S7 shock resistant tool steel alloy, hardened, shot peened per ASTM B851/SAE AMS2430, manganese phosphate – Ejector Spring, ASTM Grade A 228 wire stock, heat treated, stress relieved – Tensile Strength of 376,000 PSI Minimum – Extractor Spring, 5 coil, 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 ADDITIONALLY INCLUDED: 3 X Gas Rings, Steel Corrosion Resistant Per AMS 5906 3 X Extractor Pin, precision machined and ground AMS6440/52100 Bearing grade steel retaining pin 1 X Firing Pin, precision machined 8740 steel alloy, heat treated, precision ground & hard chrome plate AR15 BOLT REPAIR KIT | HP/MPI | ANDRO CORP INDUSTRIES Andro Corp M16 BCG‘s come complete with an O-ring already installed! https://androcorpind.com/product/ar-15-bcg-nitride/ AR15 / M16 TiN GOLD BCG, POLISHED

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