The Brownells Universal Pistol Armorer's Block helps the Armorer or Gunsmith disassemble, assemble or repair a broad range of pistols. Big, tough, PVC Armorer's Block gives you a solid work surface to maintenance a variety of guns. Precision machined, non-marring material. Pin hole locations and releifs are perfect for 1911s. Slide cuts are designed to accomodate 1911s, as well as modern guns such as S&W® M&Ps® & Glocks®. See instructions for details on the various features the Brownells Universal Pistol Armorer's Block provides.