I have the 4" Service model XD45acp.... 9575 rounds thru it without ANY failures. Only have cleaned it twice in 3 years, and that was cause I felt sorry for it. I treat this weapon like crap to be honest. It gets slid around the truck floorboard, rained on, muddy, full of **** that would make a billy goat puke and it keeps eating whatever ammo I put thru it. I would carry it into battle, anytime, anywhere. This is a purchase you will not regret.