Its a little bit wobbly but not too much. Watch out for the nut coming loose in the gas block. If that nut comes loose or off, the bolt inside the gas block will close and your rifle will not cycle correctly. (Called a Jam) I put locktight on mine so it wont come off. God help you if you lose that little round nut.Just got the rifle today and I love it, looks solid, cleaned it up a little and its ready to go...One thing I noticed that im not sure about, when I field stripped the rifle I noticed that the gas piston on the bolt carrier is kinda wobbly, like its not screwed in all the way, I tried a little bit but didnt do anything, didnt wanna mess with it until I find out. Is that part supposed to be little lose or tight?