The Iver Johnson 1911A1 Carbine is a new rifle that appears to mate a 1911 pistol to a AR-style rifle. It is chambered for the .45 ACP cartridge and looks like it retains all of the normal 1911 controls, grip safety and more.
The gun has a M4-style stock. Additionally, it looks to have a removable carry handle, removable front sight and a single Picatinny rail on the top of the rifle upper. From the photo, you can see there is a charging handle on the left side of the weapon. The barrel appears to be about 16″ in length. Pricing is already listed as $623.95 on some websites.
The same general thing has been tried before with kits that convert various pistols to carbines. Those kits include the Hera-Arms CPE, SIG Sauer ACP, and the CAA Tactical RONI. The Iver Johnson 1911A1 Carbine looks like it goes a step farther and makes the unit appear more permanently attached. Of course, that may not be accurate.