Coated Inside & Out With UCT's EXO NiB
Milspec Carpenter No. 158® Steel (Bolt)
8620 Tool Steel (Carrier)
Mil-Spec Extractor Spring, black extractor insert, Viton O-Ring
Tool Steel Extractor
Shrouded Firing Pin
Mil-Spec Gas Key (4130 Steel) attached with Grade 8 hardware and Properly staked
Bolt is shot Peened and MPI
Carrier is polished before plating for increased lubricity
Limited Lifetime Warranty
Except for the specific coating & the bolt being C-158 (most today are 9310), that is a more or less boiler plate description of 99% of the full auto BCG's you see spec'd out.
My Noveske BCG also seems to be a good one, but I forget who manufactures them for Noveske.
If it's nitrided, then it's made by Rubber City Armory (RCA) who is an excellent top tier producer. Not sure who is supplying Noveske's phosphated BCG's now
Toolcraft makes more BCG's than probably everyone else put together for guv contracts & private labels for lot of commercial suppliers as well as them being sold under their own name.
MM
