I have been looking at several .45 and .40's for evaluation. I have Sig, HK, Glock and the S&W M&P. All have Polymer lowers except the Sigs. I was looking at the M&P with a machinist and when I stripped it down, he commented on the tiny little metal rails that the slide slides on; saying that he didn't think that would hold up well because that should be the point of the most wear on the entire gun and they were so small. This machinist doesn't machine gun frames, but he does make a lot of moving parts for other machines, so he probably would know something about wear.
Gee, I never thought of that, I never really paid that much attention to the configuration of the rails. So, I broke down the HK45 and the rails were the same type of short small rails; Glock was also similar. The Sig with both the metal upper and lower had slide rails running most of the length of the entire frame. Where the S&W and HK was about 1/2 inch long.
The M&P had some slide rattle when you shook the gun, but the HK didn't.
So, if you have any of these guns break them down and check them out. I'm curious what everyone thinks and what the condition of wear is on some of the guns that have a lot of rounds through them. Has anyone heard anything concerning these rails. I do admit they look kind of weak. If anyone knows the engineering logic behind the rail design, I'd love to hear it.
Gee, I never thought of that, I never really paid that much attention to the configuration of the rails. So, I broke down the HK45 and the rails were the same type of short small rails; Glock was also similar. The Sig with both the metal upper and lower had slide rails running most of the length of the entire frame. Where the S&W and HK was about 1/2 inch long.
The M&P had some slide rattle when you shook the gun, but the HK didn't.
So, if you have any of these guns break them down and check them out. I'm curious what everyone thinks and what the condition of wear is on some of the guns that have a lot of rounds through them. Has anyone heard anything concerning these rails. I do admit they look kind of weak. If anyone knows the engineering logic behind the rail design, I'd love to hear it.