hmmm.... I can see the issue when cleaning the AR-15...from breech to muzzle, with the brass rod or fiberglass rod and with a bore guide...primarily so the rod doesn't scratch the bore (with the chromed barrels, not so much an issue) and from breech to muzzle because pulling the crap back into the breech on the AR-15, which in and of itself is damned crappy, and a real problem if not kept CLEAN (witness the problems in Iraq)! With a 3.15 inch barrel in a 1911 style .45 caliber, when the slide and barrel are removed not so much an issue, especially with bringing the gunk into the breech from the muzzle. I frequently use a bore snake from breech to muzzle and strip-clean the Kimber monthly, otherwise. More problems occur with both the AR-15 and 1911's by overzealous cleanings than shooting them mildly dirty. Now in Iraq, where the CLP was a magnet for desert sand and dirt, that was a different story.
RugerCal480 (Mike)