I shoot a stainless Springfield "Loaded" in IDPA. For the first 4,000 rounds of it's life it was "box stock". No mods, no trigger job, no special springs, and only a swap out of the wood grips for a set of Simonich "gunner" grips. In all those rounds I only had two failure to feeds due to ammo and not the gun, and one failure to feed which was an out-of-battery which I cannot attribute to anything solid. I would carry this gun everywhere if I could. It's that good.
As it came. Day 1 out of the box.
I've since taken it to the 'smith for a 5,000 rnd tune up, put on a green fiber optic front sight, installed a curved MSH and had him take the trigger pull down to a crisp 3.X lbs.
As it is today. Alexander & Smith MSH w/ mag well, sand paper front strap grips, and the FO front sight. My concessions for IDPA and "real world" carry.