While at the range a few weeks ago, I concluded that in order to get the most out of my Knight’s Armament SR-15 upper receiver assembly, I really needed to exchange my Primary Arms red dot sight for something with a little magnification. With my astigmatism, the red dot was challenging to use on cloudy days and in low light situations and I tend to strive for precision while shooting, rather than speed. After hearing impressive feedback for the Primary Arms 4x ACSS Compact Prism Scope, I decided to try one for myself. So far, let’s just say that the scope has been very impressive. I should have a full review in two weeks.