[spaceman13]

But if you really wanna upgrade it buy a metal body,it will break where the metal part that hold the buttstock meets the body,those plastic tabs are prone to break if you put too much force on.With those cheap white plastic bushing and weak gears upgrading it without doing the shims will surely destroy it.there are better way of upgrading without a spring,like a tighbore,good rubber and sealing air leak.imo anyway.fps is not the key for a reliably,i prefer a weaker but reliable gun,an upgraded broken gun on the field is worthless.