Re: Which Acog for ar15 build
I am no expert, but i find the reticle on the TA01 to fine for the kind of optic it is.
Also the 200m mark on the BDC is kinda hard to distinguish from the 100m mark. That may cause you some trouble when holding over.
I would go TA11 if you don't mind the weight and size. Much more forgiving eye relief than the 31 series units, and you get BAC with it as well. Useful if you don't mind the training related to it.
Bomb proof optics in all the meaning of the word but when it comes to ACOGs, you really have to try them out before you pull on em'.
Best of luck.