Cavier Gun Guy· Registered
Discussion Starter · #1 ·
Anyone running their HKmr556 suppressed ever have had their bolt lock back with one round left in the magazine. I am running BCM metal mags and consistently am having the bolt lock back with one in the mag. This has only happened when running suppressed so I am thinking it has to do with being really over gassed. Called HK and they were not helpful. Any ideas?