Brownells Action Block & Lower Vise Block Set For AR-15/M16

Action Block & Lower Vise Block Features Heavy-duty blocks allow you to firmly clamp AR-15/M16 receiver halves in a vise without risk of crushing twisting or otherwise distorting them when applying vise pressure or torquing the barrel nut. Keeps your rifle secure for safe effective cleaning assembly and repair. Unbreakable urethane vise block takes all the clamping force so your expensive lower receiver won't be damaged or distorted. Insert block into the magazine housing from the top or bottom then clamp the other end in your bench vise. The magazine catch locks to the block safely and securely holding the rifle for assembly disassembly cleaning or repair. Will not mar or scratch the finish. Fits tightly in most receivers and may require filing to fit others. Action Block & Lower Vise Block Specifications Manufacturer: Brownells Includes: Action Block and Lower Vise Block Fit: AR-15/M16