Does the QB78D or AR2078A have a dovetail for a scope?

[SureShot]

They (QB78, AR 2078, Crosman 160) are all virtually identical, so no difference to convert to HPA.... The QB79 is easier because you can screw a regulated tank right onto it with no other changes....

Bob

Thanks Bob. You're making my decision easier to make

[SureShot]

Okay, I've found the Shanghai Air Gun (SAG) factory website for the QB78D;
http://www.airrifle-china.com/produc...100449435.html

I'm thinking of buying one of these scope mounts for it when I order the gun;
http://scopesandammo.com/storefront/...ing-rail-p-246

If I wanted to convert the rifle from CO2 what will I need to order? Would an extended bolt probe be worth the investment?