My first gun but not my first gun.. if that makes any sort of sense. The mechanism and concepet are mine (unless you know otherwise). I dont think i really need to explain how this works it is that simple of a gun. :) Oh and sorry its been awhile since ive posted anything here. Triathlon season is at its peak and i've been somewhat busy. But im still building and I have a load of stuff built I just need to post it here :)