Hera Arms Triarii Pistol to Carbine Conversion, works on any full size M&P .22lr, 9mm or .40cal.  It will NOT work with 5" slide or .45 cal.  Pistol shown with for DISPLAY ONLY, not included.  Also not included is the Midwest Industries Pistol Brace, again, for display purposes only.  This thing is rugged, and built to last.