Soil,

Is this the type of mount you are looking at? I know you mentioned B-Square, but I found this when I considered putting a red-dot on my single six.

http://www.mountsplus.com/miva/merchant.mvc?page=MSP/PROD/Ruger_Firearm_Accessories/WCR-RRH-NGB

For the single six it would screw in from the top, but this looks like it tightens down on the integral rail. Just a thought.

KEJ