Those are the only real copy handguards which have very little hex headed screws that hold the heat shields in position. The copy Colt handguards actually have rivets (much like the true issue) holding the heat shields in place. It's got the early reciever without having fence around the mag https://keegandnjoz.bloginder.com/31830999/examine-this-report-on-colt-m16a1-for-sale