Quote:
The advantages of the poly guns is that their rail contacts are usually short/small... like Glocks four little tabs.
If there is crud in the rails it only drags on the small contact areas instead of along the entire length of the rails.
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This is not correct. The longer slide contact of a Sig P226, M9, 1911, BHP, CZ75, etc. has never been a common factor that caused a slide to slow down due to "crud". not even significant amounts of mud, sand, ice, rain, etc. All the above mentioned guns and others have long records of service and use in rough conditions and the amount of crud to effect them would have to be extraordinary to effect them. There is no evidence that polymer framed guns are better or worse in this regard.
There is a good amount of evidence that full rail contact (a tighter slide to frame fit) can be a factor in enhancing accuracy in steel framed guns. Polymer frames get around this by generally having a good barrel to slide lock up. Generally you can't tighten their (poly guns) slide to frame fit.
The instructor was wrong or mis-quoted. There's no reason to go looking for "the logic" in what he said. He was just wrong.
tipoc