that looks good to me i like this one, any idea which mount would be idea for the rossi?Vortex Sparc would be a good choice. Small light weight a decent on price.
Vortex Optics - SPARC Red Dot
that won't matter much, the rail for the rossi takes up the spot where the rear sight sits.The problem I see you having with the Vortex Sparc is it will probably not allow you to cowitness with your iron sights because the laser is emitted out of the bottom of the unit. I had the same problem when I put one on my AK w/ Ultimak, and IMO, probably its biggest drawback. Plus I hate how the power switch is located on the side of the unit because it is constantly turning itself on upon contact inside a rifle bag.