Selecting a pistol scope is much more complex than rifle scope. Because
it has shorter range, most scopes have little to no magnification factor.
In more cases, illuminated reticle is added for a quick aim. Furthermore,
Laser devices are also popular with pistol shooters for the same exact
reason. It is harder to locate the laser dot during day light.
C-More 
Base on the fighter jet aiming
technology, a red dot is seen floating in a thin piece of glass when target is
the line of fire. Very quick target acquisition and easy to aim.
Made in USA, retail $350.
Trijicon ACOG Reflex 
Similar to C-More
but even more compact. Build in long term energy source for the
illumination. The dot is in orange color and not as bright as C-More,
therefore it is harder to aim. Made in USA, retail $200.
Bushnell 2-6x36mm 
This is a hunting scope
which is suitable for pistol capable of hitting target up to 200 yards.
Good clarity and easy to aim with at rest. I mount it on Thomson Center
.223 Cal with 10" barrel. 100 yards group from rest
position is about 4". Made in USA, retail $180.
BSA RD30 
Tubular type with illuminated
red dot. It is a good bargain and fairly easy to see the dot. Made
in China, retail $50.
