I think the ACS is MagPul's best offering to date. Outstanding cheek-weld, perfect length, great storage, priced right!
Here's mine on my new duty rifle.
http://i46.tinypic.com/2useofl.jpg
I've grown tired of hearing guys say how "ugly" the ACS is. Yeah, it's ugly as hell!!! And so is the STARK SE-1 grip I have mounted on the pictured rifle, but I couldnt care less as they are both the most comfortable offering in each of their classes for me.

