I recently bought a used Mil-Spec that looked to be pristine in condition. Didn't look like it had fired more than a few rounds. You can tell by the rub marks on the barrel and everywhere else that the parkerized finish makes contact with another parkerized finish such as slide to frame rails. Anyway I finally took it to the range yesterday and shot 200 rounds through her. I had a few times where the slide did not completely go into battery and it just needed a little push and it was in. So when I got home and cleaned her up real good I looked at the recoil spring. I have a bunch of spare parts and springs and just about everything because I've had 1911's for many years. I compared the stock spring to a few good quality springs both in 16 and 18 lbs. The Springfield Armory spring was at least 2 full coils shorter than any other spring I had. I decided to look at another Mil-Spec that i have and sure enough it also was 2 coils shorter than the other springs. Now this one shot great without any issues but it did seem like the slide recoiled pretty hard as did the latest one that didn't always go into battery. I changed both recoil springs and I wonder if S.A. uses cheapo springs in their lower priced 1911's. If you have a Springer and have any slide battering or failures to go into battery I would suggest getting a better quality recoil spring. They are cheap and it sure wouldn't hurt to be sure that the recoil spring is up to snuff. (shooting or carrying) Just thought I would pass that on.