ok ok ok the breakdown of the gun. from the tank to the front. the bottle is a 20 ouncer set in 3/4 in. female adaptor. i sanded down the threads on the bottle so it would fit inside the 3/4in adaptor. then i used a sharpie and marked three marks on the bottle and on the adaptor so i could align the holes that i drilled for 3 sheet metal screws. after drilling the holes i smeared the bottles threads with rtv room temperature vulcanization sealent. then i covered the threads of the screws with it and screwed them in. let that sit for 24 hours to cure. then i used a 3/4 in. male adaptor glued it to a 5 in piece of 3/4 in pipe. then i gued that to the end of a 3/4 in tee. then on the otehr side of the tee i used a nipple of 3/4 in pipe. and glued one end to the tee then the other to a 3/4 ball valve. then that can connect to the barrel. i never glued the barrel cuz i was to cheap to make interchangeable barrels. so i decided id just make it where i could pull it off plus it makes it easier to reload it with darts. then the down piece of the tee. i glued a 4 in piece of 3/4 in pipe followed by a 3/4 in coupler. and a 3/4 in plug into which i set a bike valve into and sealed with rtv. glue it all together screw the tank on and take it up to pressure. ive only pressured it to 40psi. idk why i havent higher. but it gives pretty good velocity with the darts. for max effect put bout a 2 foot barrel on it. ive shot darts through 4 5 subject notebooks.
Im off to make mine