Maintenance of SBR/AR pistols “Stoner Type Gas Impingement system”
BPM Inc. Technical Document- Topic– Maintenance of SBR type weapons platform with “Stoner Type Gas Impingement system,” i.e., Mk18 type uppers, as well as “AR-style Pistols” that are common in commercial firearms industry, including 7-1/2” to 11-1/2” barrel length configurations. Scope of Topic– It is known in the industry that increased Severity of gas pressures…
