Is there a product that lets you mount a picatinny rail right on the vent rib? I dont want to put that big saddle on my SX3 but want to use a red dot
http://mikestexashunt-fish.com/mounting-optics-on-a-vent-rib-shotgun-barrel/
This may be the answer
Aimpoint S-1 works on a vent rib. I'm also looking for options for my beretta o/u