I just bought the Bushmaster modular carbine (like the anniversary edition but without the chrome) that came with the ACE stock. I haven't shot it yet, but so far my opinion is a bit mixed. I personally don't really care for the way it looks, but then again, the original ar15 stock ain't all that great looking either. Supposedly it deadens the sound of the buffer spring which I'm very interested in, as I've always been annoyed by that sound. The only thing though, that I might seriously dislike is the rubber butt pad I think will grab at clothing, especially when mounting from a tactical sling ready position. I will report back when I have shot the rifle, and then again after I have taken the tactical carbine class I'm taking in October; these are just my first impressions. I have to say though, that pretty much everybody I've shown it to has been impressed with the stock.