All Those are the only copy handguards which have little hex headed screws that keep the warmth shields in position. The reproduction Colt handguards even have rivets (much like the authentic matter) holding the heat shields set up. I have seen fantastic benefits with electroetching. It does choose some exercise https://colt-m16a1-for-sale89900.blogdanica.com/31142690/5-easy-facts-about-colt-combat-elite-commander-45-acp-described