Weird, glitchy gun.
Notes:
On fire, there's some sort of half second, orchestral violin sound
The gun is partially invisible, and hard to aim with.
Apart from that, the model looks and feels good if you ignore that it's... incomplete. Kind of a fun challenge, though?

walter hartwell white,

Is the audio from a film or something?

for some reason each of the modded gun models uploaded by you are all just black. like pure black

Nice, but needs to be double action

Are the gunshots from a game or movie? There's some background noise/music on firing.

Fixed.

Visual bug with spent casings, they emit light, like unused ammo would.