This is essentially a technique of grinding off the reinforcement substance which was extra to improve the buffer tube/extension area, and reprofiling the area to really make it resemble the first A1 area. This may consist of some welding or filling of some form. Use the pictures beneath as an https://juliusyazda.wikiannouncing.com/5652025/not_known_facts_about_colt_combat_unit_rail_gun_45