Mine is in jail but I'm keeping it at a range so was able to try it out a couple times so far. Took a while to get all the mounting parts though.
First time I had pistol setup ready so stuck it on the glock 17 with 9mm end cap. It was a lot of fun. I tried short and long modes. Next time I'm bringing a long mag to try in long mode for looks and balance. By the end I did have quite a bit of copper shavings in the can. No baffle strikes... I did shoot some fairly rapidly, maybe it got a little loose on threading by end, not sure what happened there and haven't tried it again.
Second time I used flash hider ASR mount on AR15 but forgot my 223 end cap so used the 9mm cap. Goes on so easily. Only shot it in long mode. Way less blowback than I expected, very negligible. After the first mag I gave it a good bare full hand grip and squeeze just to make sure it's hot enough. I can confirm it was hot. Hotter than with the pistol.
Both times I definitely had tighter groups with the suppressor on.
It was an indoor range and other people were there so no chance to test without ears. I think the sound with glock 9mm was really low though, felt like an air gun. Especially with the weight of it on pistol in long mode, it's zero kickback.
On 5.56 it was good but I didn't shoot unsuppressed that day and there was a 50cal next to me so will need to try next time to shoot with and without.
So far I love it and can't wait to bring it home.