New Reproduction Colt 4x AR-15 Scope by Brownells
This guide details the installation and zeroing process for the Brownells reproduction Colt 4x20 AR-15 scope, based on original 1970s blueprints. It covers mounting the scope onto an AR-15 carry handle and performing range adjustments using the BDC turret. The information is presented with high authority by Ian McCollum, a recognized expert in historical firearms.












