The Rogue one DLT-19 deserve its own research post.
The Original triology version of the DLT-19 is similar but compared to the Rogue one variant has some big and small differences.
After reading SlyFox740[TK] his post on his intensive research of the R1 E-11 I wondered if the DLT-19 was also build around a airsoft gun instead of a real one.
Comparing pictures of the prop and the real one I quickly saw that the two are different and is indeed based on the airsoft MG-3