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What material is used for the BCG? — 1 Answer

by JLG68, from OH, United States Asked on June 16, 2025

Name Rosco Manufacturing Saucepack Bloodline 300 Blk Threaded Rifle Barrel (5)
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Answered by Rosco Customer Service, Manufacturer from RI, United States, on June 25, 2025

Carrier Material: 8620 Steel
Gas Key: 4130 Steel, attached with Grade 8 hardware, properly staked
Cam Pin: Hardened 4340
Firing Pin: 8740 Steel, Mil-Spec, Center-less ground & Hard Chrome coated
Bolt Material: 9310, Properly Heat treated, MPI/HPT
Extractor: 4340 Steel
Ejector: S7 Tool Steel

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