My nightmare with the slide stop spring on the P232 is that it is an internal slide stop activated by the mag follower. The spring holds the lever flush with the frame rails until the follower pushes it out, catching the slide. No spring and the slide stop activated at will. And, it sticks out so that wiping it down with an oily rag was enough to catch the thing and launch it out into my backyard. Seems like every time I go to order a replacement, it's out of stock. Midway, Brownells, directly from SIG (unless I order the full kit, which I might). Think I'm going to order a few, just in case.