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Originally Posted by Jeroy Lenkins
Alright guys i have a rather massive problem. I received a Hephaestus steel gas tube and recoilspring and rod. Installed a prowin cnc hop and prowin high out put valve and cut down bucking. My problem now is whenever i fire the first shot goes about 90 feet and the second or third will jam the gun in the 3/4 loaded position. After inspection of the bb it apears scarred on the sides which i had to mark in pink due to my garbage camera. Any ideas?
Actually i dont know how to post pics from my iphone so :/
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The Hephaestus gas tube is most likely too low, resulting in the gas piston striking it when cycling. Try installing the stock gas tube and see if that fixes it.
Which magazines are you using? Also it is generally considered a bad idea to run both the PROWIN metal nozzle and metal hop chamber as over long term you'll most likely damage the nozzle.