Thanks everyone for reply.

@philippejugnet: This is not a realistic representation as used in Doom, is similar to the style made by Locomalito in the 8bit killer game.

I liked it, looks like a reduced version of doom shotgun.

Looks great. Not a fan of the broken highlight, and the flash might look better smaller/with more yellow.

It looks like a handgun. The perspective would change if it were a shotgun. I looks like it's firing above, not front.

 The flare is bad, but the rest is great good job (Y)