Hey guys! I'm having some issues with my bt 4 after installing a zerokick hammer, I cock the hammer and shoot and it shoots like 3 shots and decocks. I have replaced the hammer springs from stock to red, yellow and purple . I'm almost at my wit's end; but that's why I joined this forum to get help and give help if I can, thanks in advance.
P.s I have polished the internals, replaced the power tube, modified the air passages on the air valve. I have done this before the zero kick hammer upgrade and it shot great with stock valve.
Well! I just installed my stock hammer and my bt shoots great, it sucks that there was no help but that's life.
Hey die.another.day sorry that there was no info or help. I guess just go back to your stock hammer and spring. It should shoot just fine after that.