, following my first coax the anti tank one, witch failed miserably( filled way to fast, piston shot up hit the barrel and crapped it up, beacause I had a crap barrel support. Now on to the new and improved one, it now has a barrel support consisting of a 3/4x2'' bushing hollowed out and cut the circle out making and X shape fitting almost snugly into the 2'' chamber.It has a nifty little laser aiming system held in by Velcro tape, operated by a small pressure switch that you press with your thumb while you hold it(I hold it from the waist, thats why its all the way up there), has a 3/4'' barrel, yes I know, could be longer, but I made it short so it looks way better, performance is killer! It has almost as much ''push'', as BigBlue, The whole thing is 4 feet long and serviceable, piston is made of 1 1/4 coupling cut, it seals on a toilet plunger rubber, witch seals perfectly, the bumper consist of the toilet plunger rim. Id say she's shooting over 500fps. I hope you guys like her
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