Ruger Blackhawk in .357
Remington Model 700 CDL in either 30.06 or 7mm
Mosin M38 carbine
M1 Garand or M1A Springfield
M1911, manufacturer not important
I'm sure that more will be added to the list over time.
EDITED TO ADD:
Winchester Model 94 Short Rifle, but I think this one should be closer to the top...maybe between the Remington and the Mosin.
Saiga 12 gauge shotgun converted to the AK trigger group
MKA 1919 shotgun, because the EBS Project is lonely (and also because "AR-15 shotgun ZOMG!!!)
Vepr Tactical Sniper Rifle because I certainly have enough rounds for it.