Master ARM-542 Armature W/Retaining Ring HG Series Heat Gun 120V. Condition is New. Replacement Armature ARM-542, 120V HG Series A Heat Guns For Use With: HG-201A Master Heat Guns, HG-301A Master Heat Guns , HG-501A Master Heat Guns, HG-501A-D Master Heat GUN, HG-751A-C Master Heat Guns Oal.3.80, dia.1.50 MADE IN USA ,GENUINE OEM PARTS LOC.3-B-1 & 3-B-1A tub