[KF2] Trench Gun

The Winchester 1897 Trench Gun from Killing Floor 2. Of course I can't give you the incendiary Dragonsbreath rounds that the KF2 version uses, but I can still make it fire buckshot. A request I thought might be fun despite not being able to make it set things on fire. I tried to make it feel extremely powerful in close quarters, especially with the somewhat quick fire rate meant to simulate the infamous slamfire technique this shotgun was known for. While primarily a World War I firearm, it also saw some use up into World War II. Real credit goes to Tripwire Interactive for the model, texture, and sound.