Those are the only reproduction handguards that have small hex headed screws that maintain the heat shields set up. The reproduction Colt handguards even have rivets (just like the true thing) Keeping the heat shields in position. It's got the early reciever with no fence throughout the mag release and https://cashuvvsq.wiki-racconti.com/7791678/a_simple_key_for_colt_combat_unit_rail_gun_45_unveiled