Finally got my KURTS .22 LR barrel in an M-4 profile 16". I installed it on a Bushmaster upper i had lying around. I also installed an AAC M-4 2000 muzzel adapter. So then for the live fire testing i used Aguilla and Reminton subsonics. Without the suppressor attached it shot 3/4" at 25 yards with iron sights and old eyes. Now when i attached my M-4 2000 can it would not should accurately at all rounds were striking anywhere from 12 to 24" from POA. and sometimes missed the target completely. I inspected the can and so no signs of the rounds striking the baffles though i did notice some lead shavings coming out of the can when i shook it out. Anyone have any ideas?? This same can on a DPMS 22 upper shoots 1/2" at 25 yards. forgot to say using a Ciener kit and Blackdog mags!!