I fixed it... Its the hop up bucking I didn't put it right. As for my seal everything inside is systema except for the gears. I tested it out first to get a good seal before I put it all together. Thanks for the help
Originally Posted by R.I.T.Z
I am not sure, as I said measure and then buy.
as for your FPS, your hop-up could be off, your rubber could be damaged, your airseal may suck,