the trigger is steve's from poseidonsub (poseidonsub spearguns, custome spearguns madet to order.) the muzzle is a conglomerate of those I have seen on pictures from this site and others into somthing I liked the best. The upper pin is angled foreward a bit, and out, maybe the angles are not the best in the pictures I took. Hopefully it will not catch, but if it does, a few taps with the hammer should rectify the situation...