You're welcome. I loved the concept, but it was lost on a 556 carbine
Side note: I bought mine used and it came with an ARMS throw lever mount. The optic is rather wide, and would rock side to side when mounted. I don't know if this was related to the mount or the mount/optic interface.
Since it had a 6MOA ret I couldn't tell if this had any effect on accuracy. This wouldn't matter on a shotgun, but the recoil might pose a problem if it's a design issue between the mount/optic interface.
Again, I think it would be a great choice on a SG as long as you can lock it down tightly.