I have the same rifle with a Mueller Tac II on it and am very impressed with the optic. You can get them for about 270, they have the mil dot reticle and are adjustable zoom from 3-10 x 44mm. The Mil dot is not a perfect system for every caliber, from my experience its more or less spending time on the range and figuring out how to use it with your file and caliber.
That "extender" you ask about is a shade, it keeps some of the glare and sunlight out.
|