Classic Firearms go over the LWRCI SMG-45, a rare and discontinued firearm. They note its short-recoil operating system, which provides a softer shooting experience compared to the H&K UMP-45. Other features of the gun is an 8.5-inch threaded barrel, a non-reciprocating charging handle, and fully ambidextrous controls. Furthermore, it comes with Magpul Pro metal flip-up sights and an SB Tactical brace.