I built a suppressor for my grendel. Prior to the suppressor, I had about 15-1600 rounds through the gun. Mounted the suppressor and the bolt broke after about 100 rounds. Thought maybe it just wore out, so I ordered a couple new bolts from Underground Tactical. Broke another one after about 100 rounds. I currently have a bolt from Maxim in there, at about 100 rds and it hasn't broken yet, but I turned the gas way down (JP adjustable block) so that the bolt barely locks back on an empty mag.
Is this a known issue? My loads haven't changed. Only difference is the suppressor.
Is this a known issue? My loads haven't changed. Only difference is the suppressor.
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