There are so many optics available for ARs that choosing one can be mind boggling. I have a ACOG TA-11 on one of mine and it is a great scope, I can see why the US Military uses them. But for my 2'nd AR I don't feel like spending more for the optic than I did for the rifle. I recently bought a new old scope, yes it's 25 years old but unissued. It's a Hensoldt Fero Z-24 that was made for the German Army for use on their H&K G3. I took the H&K mount off it and put it in an ARMS #19 Throw Lever Mount and now it will go on anything with a Picatinny Rail. Tried it on my AR and I'm very impressed with it, what a rugged little scope with superb optics. It even has an illuminated reticle for low light. The Germans really make good glass and these Hensoldts are very affordable. So here you have a military grade optic at a great price. I highly recommend any of the Hensoldt optics for your AR.