This is a Glock 17 as seen in the film The Dark Knight. It was done in both 1/6 and 1/4 scale. I modeled this is Fusion 360 in 4 separate parts. There is the handle/body of the gun, the sliding chamber, extended magazine, and bullets. The Glock is functional in that the chamber can slide back exposing the bullets, and the clip and bullets can be removed separately.