Yeah, they are pretty good.
They have a better cut on the front that give the same effect people go for when they file the ASC mags.
They come stock with an A/T follower that is almost identical to the magpul versions, no need to upgrade.
Mine will take a round of a just slightly longer OAL if you are into reloading.
They are made of steel instead of aluminum.
Never had a problem with mine like that. Only thing bad about it, is the 10th round goes in a bit tight. You won't be able to seat it on a closed bolt, but if the bolt is already open, no problem, and my AR can strip that tight round off the top just fine.
They look pretty snazzy with range plates, too.