Guest LLArms Posted June 28, 2012 Report Share Posted June 28, 2012 Just want to confirm, these are only case hardened correct? :o Quote Link to comment Share on other sites More sharing options...
Robocop1051 Posted June 28, 2012 Report Share Posted June 28, 2012 Depends on who you buy from, and how much you are willing to spend.JP's LMOS uses the "QPQ" 416 Stainless steel $$DPMS uses a 4140 Carbon Steel, either phosphate or chrome coated $Fulton Armory uses the same as DPMS $Armalite uses 8620 Steel on the AR10 $SI-Defense / NEMO Arms uses: a 8620 carrier, heat treated, chrome-lined bore, chrome-lined carrier key $$ Nib or TiN coated 416 Stainless steel $$$ Quote Link to comment Share on other sites More sharing options...
Guest LLArms Posted June 28, 2012 Report Share Posted June 28, 2012 DPMS factory LR-308 bolt carrier. Quote Link to comment Share on other sites More sharing options...
Robocop1051 Posted June 28, 2012 Report Share Posted June 28, 2012 I believe they are definitely "heat treated", but I don't know enough about metallurgy to know the difference between that and "case hardened". Quote Link to comment Share on other sites More sharing options...
Fröman Posted July 2, 2012 Report Share Posted July 2, 2012 That kind of part is almost always case hard and not through hard. Military M16 BCGs are case hard. Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.