COLT M4 CARBINE MAGPUL SL GRAY SECRETS

The bolt encounter can be somewhat distinct. Among the lugs is actually Lower in 50 percent, causing an open up bottom portion of the bolt confront. An extractor, situated in one of several bolt lugs, glides in excess of the rim of a cartridge prior to it's completely pushed into your chamber, producing the action form of semi-managed-spherical fee