I had one on my AR that I built. I like the length better than an A2, but it's a just a little on the plasticky side. It makes a little noise when it's struck on the side, but not too bad. I put a strip of "100-mph" tape on the each side of the inside of the stock and that helped cut the noise somewhat.
It has more room on the inside than an A2 because there's no foam on the inside. That's also why it tends to be a little noisier. I used to keep a spare set of batteries for my EO-Tech in there along with some spare parts and a couple of KAC RAS panels(6 rib & 4-rib). It's pretty roomy...
I like the buttplate on it better than an A2 also. It has rounded corners and only the trap door has checkering.
I took the the standard sling attachment off of mine and went with a single-point sling attachment for HK-type hooks from Fulton Armory. I filled in the slot where the standard sling attachment goes with Bondo-Glass and painted it black.
All in all it's a good stock set-up, but I'll be removing it and putting a collapsible stock on my AR when the ban dies in about 3 weeks.
Picture of my rifle with CavArms C1 installed...
I'll try to get some better pics posted shortly...