I am no scope expert by any means so I apologize in advance for my lack of knowledge on the subject matter. First look is dang it looks like a four cell maglite almost emberassed to take it to the range damn thing is huge. There is a tiny black flake at the 5:00 position kinda annoying but ill live with it. The fast focus adjustment on the back has me stumped,,,,if i adjust it to my vision it moves up and down really easy and the reticle moves with it? Am I doing something wrong. It looks really clear to me but this is the nicest scope ive ever owned so probably not saying much and at 16x or higher magnification you reeeeeally gotta have your eye perfect or the picture gets milky on the edges.....again maybe im wrong here or got a dud if anyone has any advice on this thing other than selling it or running it over im all ears....thank you in advance for any advice..