Thanks for any help tagging the guns. I know how enthusiastic people can get about them and I haven't a clue how to tag these other than one is a shotgun of some kind.
RiderFan said: Some may recognize the P90 from the later seasons of Stargate: SG1 and season 1 of Gunslinger Girl.
Or several Doctor Who episodes (Season 2 - Impossible Planet, Season 4 - The Doctor's Daughter, with what looks like a mini butane torch welded on the barrel). It seems to be the go-to weapon when a futuristic look is required.
The shotgun looks like an Benelli M4, with the stock removed, making it a modified M1014 or M11707.
It's definitely a SPAS-12. The handguard, grip, receiver, and vent holes above the barrel match the real life furniture. As for it's length, drawing someone holding something like that in that position can be a little difficult. The hand is usually drawn before the object it holds and sometimes, the object is too short or too long, hence the cutoff at the calf. The length of the shotgun can be understandably unaccounted for.