Originally Posted by Mitchell12
Huh? Batterys have nothing to do with FPS and everything to do with trigger response and ROF. Your piston is going to be flying back a bit faster so it's going to wear a little quicker but just use your full auto sparingly and it'll be fine. That being said if you could get someone to shim it for you that'd go a long way for reliability.
what do you mean by shim it