Gun Smithing Tools Combo Set Upper and Lower Receiver Vise Block and WrenchGun Smithing Tools Combo Set Upper and Lower Receiver Vise Block and Wrench ITEM DESCRIPTION Upper and Lower Receiver Vise Block Set With Armorer's Wrench (Not a gun part or accessory) This vise block set is the essential tool for general maintenance and repair of upper and lower receivers. All components are solidly manufactured with sturdy polymer material or powder coated steel. Features (Upper receiver block): Allows for safe clamping of upper