I was wondering if anyone knows of a manufacturer that makes quality suppressors that slide onto the barrel before attaching to the threaded end of the barrel? The overall length reduction and moving the balance point back would be beneficial features. I know that SAKO show these type of suppressors on their website for their TRG-22 and TRG-42s, but I have never seen any of these here in the U.S.. Have these been tried in the past and not worked well?