I threw in one shot with supers from the other video.  3 shots of subs and the can was just warm. 3 shots of supers and that biotch is to hot to touch.  Ignore the shot placement. I didn't sight this in from a rest and this mil spec trigger is not my friend. I most likely pulled those last two shots. 7.5 inch acme machine upper with black rifle arms enhanced firing pin. proprietary h3 buffer for the maxim cqb brace.  Gas blow back with the subs was not even noticeable. Gas in my face with the supers was pretty bad.  To my ear this is quieter than my 9mm pcc shooting subs.

The hole in your blast baffle is going to get loved tenderly with those supers. :)

Meh, i ain't sweating it. I've got the recommended key micro brake. I might get a sandman S and leave it on this gun though because i don't think the sound difference between the two will matter with supers.  I'm going to shoot some subs in the short configuration and then decide. If it's still quiet in short than the sandman s will be plenty quiet.

I wish I had a place where I could go shooting in my pajamas.

LOL! right! I've only got a few acres, but i'm lucky enough to have a 100+ acre tree farm on one side of me and farmer fields and woods on the other.