ProMag Vise Block for 9mm Glock, Black
This vise block allows the user a “third-hand” to work on and install parts to Glock pistols in 9mm/.357Sig/.40SandW.  The vise block is clamped into the users vise, and the block is then inserted into the grip-frame of the pistol, and is held in place by the magazine catch.  Constructed of a black, injection-molded polymer, for years of reliable service.