This is the compact version of the S&W M&P 45.  This 45 ACP pistol has a 4" barrel.  Three Interchangeable Grip Sizes.  Stainless Steel Drift Adjustable Sights.  One standard and one finger groove magazine each holding eight rounds.  Scalloped front and rear slide serrations.  Ambidextrous slide stop and thumb safety.  Polymer frame and stainless steel slide and barrel.  Picatinny-style rail.  Priced to sell at $390