I do not own one and have never heard of it. I think it is the same ATI that makes accessories. I have a friend that brought one to me for repairs after 100 rounds. I looked at this garbage and can't believe they are making AR's. Multiple issues found. First I found that the front sight base gas block is sitting at the 11:30 position( leaning to the left). He said it cycles like crap, it makes sense since he is not aligned to the gas port . The BCG is barely scratched and not properly staked. The birdcage is not even on tight and the crush washer is barely making contact. Has anyone seen these ATI knockoffs? My question is: how is the front sight attached? It appears that it is riveted on, they are not even roll pins, they are mushroomed out on both sides. I have to figure out a way to get them off without damaging the barrel. I'm putting on a low pro gas block and a quad rail for him. I have only built quality AR's and not modified cheesy ones, I'm worried that the rivets are laying in a notch under the barrel. Can anyone advise on how these are secured?