me, too, on a M21 Pocket Beretta. Front sight is on the can. The threads on both are flame-hardened, but the can is loctited on the barrel. 8" OAL, 15 ozs. The can is sleeved around the main tube and has an underchamber, 3" long, but 1/2" of that is the threads. The flip up barrel feature is gone, extractor added, real sights, and the barrel release is now the slidelock. Run wet, it's very quiet. No more noisy than a much bigger can if you let the slide cycle and run it 'dry"..22 40 grain sub sonic with a suppressor
Cheers
Richard