ProMag AR-15 M-16 UpperLower Receiver MagWell Vise Block Set

The ProMag AR-15 M-16 Upper and Lower Receiver Mag Well Vise Block Set is a three piece set of heavy duty blocks securely clamp all flat top and carry handle AR-15 andM16 upper and lower receiver components to prevent damage or movement during repair, assembly and cleaning. It is constructed of injection molded black polymer and is made in the USA.