Grease Gun...
I saw the ad in Shotgun News. You know what that is don't you, thats the Grease Gun submachine gun in .45ACP from WWII. It was called the grease gun because of how it looked. Its not exactly new. It was the U.S. answer the the British Sten gun in 9mm. It was also to replace the Thompson because it was easier to produce and a heck of alot lighter. Decent for what it was originally made for, but as a semi, long barreled, fixed stock....maybe as a collector piece? It was also originally open bolt in design, as I noticed that this one is closed bolt. They were used until just recently. I had a buddy that was a tanker in the Army awhile back and he said they still had some in their armory.