Initially Posted By Tony_k: Not professional guns, since Colt had a coverage of not providing MGs to non-public functions. By legislation they might not, simply because they hardly ever paid out any federal excise tax on their MGs. That saved them around ten% for each gun. (FET is paid via https://danteefdax.iamthewiki.com/8389846/the_2_minute_rule_for_colt_combat_unit_rail_gun_45