put a bag clip in the small hole for it to fire, recommend to crush it a little with pliers (no marks) for snug fit. also, anyone like my ugly rug? made by AgonyEcho on printables, reposted on makerworld for convienience. link: https://www.printables.com/en/model/340366-functioning-mini-toothpick-handgun-mk-16-v-3