That's pretty sweet. Is it a Mark IV where they shortened & threaded the barrel?View attachment 2044443 View attachment 2044442 Just got this back from accurate ordinance in dacula. Took it outside for a test run. Ran it with a Thompson machine, dead air mask and huntertown suppressors, it cycles everything down to CCI suppressor 970 fps. And stays pretty quiet up to federal automatch 1200 fps. I’m gonna try some mini mags later. Is accurate enough out to 15 yards and a blast to shoot! They did a great job! The Thompson was the loudest and I couldn’t tell much difference in the other two.