actually ive put more rounds through my brothers before i bought mine, than mine. The only problem ive had is if you are so easy on racking the slide it will stop about 1/8 inch short. then you can either push it forward and it well be good to go or rerack. other than that none with mine, my brothers, or my dads.. the only other thing thats not a issue but strange is my gun is a A and my brothers is a B or vice versa... but his magazines dont work in mine... not an issue like i said but apparently they changed the magazines length front to back a hair and thats enough for them to stick i mine... just turned in my ccw application. in a month ill be ready.. trust the gun with my life and my families.