Ive read that quite often before a gun is ever designed in the real world it is created in a virtual space like 3d animation.
Above is a beautiful animated gun by an amazing artist. Weapon design, modelling and animation all done by Jamie Martin. This gun was created in Maxon Cinema 4D. Edited in Final Cut Pro.
Ive dabbled in 3ds max before and it takes some serious skill to come up with a finished product of this caliber.
Animated 3d nuclear explosion video