People Are the one replica handguards which have tiny hex headed screws that maintain the heat shields in position. The copy Colt handguards actually have rivets (just like the genuine matter) Keeping the warmth shields in place. Of course, I'm sure the upper receiver is Colt, together with the BCG. https://andrefggdz.wikibyby.com/1080365/a_review_of_colt_python_6_for_sale