AR15 BOLT REPAIR KIT

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