تماشای ویدئو Unreal Engine 4 Tutorial Custom Weapon english از آی-ویدئو
How to add your own weapon to the shooter game demo from epic games. - take a look at my custom weapon showcase video to see a good result
The obj file: https://docs.google.com/file/d/0Bx4rUIObSdNYXzQwX2tHalFhUTQ/edit?pli=1