Interesting real steel firearm made by MasterPiece Arms which at first glance will remind you of a MAC machine pistol. This is a semi-auto pistol that can fire 5.7x28mm in a 20-round magazine and is in A-TACS AU hydrographic coating. It will be available to the US civilian market for US$659.00.  You might want to wish that there'll be an airsoft version of this.

Press release after the video.