We received over 400 M-16's from the Department of the Army, 1960's vintage, and the bolt carriers looked rough as a cob. They worked. Think of a bolt carrier group as a well tuned stock car. It may look a little rough on the outside, but the inside is tuned to run wide open without failing.
Pretty does not mean it's reliable and rough does not mean it won't work. Maintain it, lube it and run it like a stolen car.
Bookmarks