Sudo Solutions and Hoffman Tactical got this video of testing the LIMA SIX Belt-fed Upper Receiver for real steel use... "In this video, we test the LIMA SIX belt-fed (Beta) upper receiver from LIMA SIX. The goal of this project from LIMA SIX is to build not only an affordable belt-fed, but also to make it very tough and reliable while utilizing as many AR-15 parts as possible. The LIMA SIX also uses parts from the M249 and a feed tray that is very similar to the design of the M249.