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re: Official AR-15 thread
Posted on 6/17/14 at 11:12 am to Hu_Flung_Pu
Posted on 6/17/14 at 11:12 am to Hu_Flung_Pu
Mil-spec is really just a minimum standard, Carpenter 158 bolts are mil-spec and generally are wonderful bolts. I believe LMT and maybe KAC uses a different material called Aermet 100 which is supposed to be 50% tougher than C158 bolts. BCM uses C158 steel and those are really popular, but BCM also has very strict QC on everything they produce so that adds to the package.
1
Posted on 6/17/14 at 11:23 am to burgeman
Here's the list of what my BCG is.
Milspec Carpenter No 158 steel bolt
Shot Peened Bolt
HPT/MPI
Chrome Lined Carrier (AUTO)
Chrome Lined Gas Key
Gas Key Hardened to USGI Specs
Gas Key Grade 8 Hardened Fasteners
Gas Key Staked per Mil Spec
Tool Steel Extractor
Extractor Spring
Extractor O Ring Insert
Milspec Carpenter No 158 steel bolt
Shot Peened Bolt
HPT/MPI
Chrome Lined Carrier (AUTO)
Chrome Lined Gas Key
Gas Key Hardened to USGI Specs
Gas Key Grade 8 Hardened Fasteners
Gas Key Staked per Mil Spec
Tool Steel Extractor
Extractor Spring
Extractor O Ring Insert
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