I have an AR332 and I've fired about 600 rounds with it mounted.
The AR332 is ACOG-like. It is not an ACOG. I don't think the AR332 is as robustly built as an ACOG. But then again, the Burris is in the $340 range, with most ACOGs going well over $1,000. So, the ACOG ought to be better.
That being said, it is still a fantastic scope. It still seems to be very well built and is a bit heavy. The glass is wonderfully clear. There is no distortion at all in the field of view, even at the extreme edges.
The scope has a focusing eyepiece which is very nice for my 45 year old eyes.
The reticle is a bit busy, but is very useable. It is etched on an internal lens so even without illumination you can use the scope. The reticle can be illuminated in red or green. In bright sunlight, the red does not wash out on the highest settings, but the green does a bit. I prefer green illumination as the sun starts going down, and red, or no illumination in the day time.
The center dot in the reticle is 2 MOA. I am pulling consistently 2 MOA groups, and sometimes a bit better - but I think the sub-2 MOA groups are more luck than anything. The center dot covers a 2-inch diamond at 100 yards so sub-2 MOA is asking a bit much. The reticle is designed for fast pick-up, not precision sniping.
The scope takes a battery you can find in any supermarket or drug store and they cost $7 for 2 where I live. I've yet to burn one out.
The scope comes with sun shade thats an inch or so long. I keep mine mounted all the time. It screws into the scope body. Burris is not making a flash-kill device for the AR332 that could be used to replace the sunshade.
The scope has 3 small picatinny rails and I have a Burris Fast Fire II mounted on the top rail.
The one thing I don't like is that the illumination adjustment knob on mine is tight and its easy to accidentally turn just the battery cap as opposed to the whole knob.
The base it came on is detachable so you can mount it on an AR handle if you want, or use the mount and put it on a flat top receiver. Burris sells a quick detachable mount which is very well made and an exceptional value. Or you can use an ACOG mount -they fit, too.
Eye relief is a little short, like with many ACOGs. But not too bad.
All in all, it's a solid scope and a great value. I like mine very much and have sold a couple of friends on them (actually, the scope sold itelf), one of whom put one on a 7.62 AR rifle.
Here's mine...
Or you can handle mount it if you want (I didn't leave mine like this).