If it's a Colt, Chances are all the parts are spec.. So should be no problem..

Can't really tell anything from the pic's.. Looks good as far as I can tell..
As long as a pebble didn't get lodged in the barrel,, You should be good.

Who was the yahoo on arfcom a couple of years ago that threw his brand new AR down the driveway to, in his words: "Give it that used look." Or, at least said He did...