Not worth it price, barely worth getting. - IMG AR-10 .308 12 Gauge 19in Complete Upper Receiver w/Two 5 Round Magazine

Has issues with ejecting, magazine staying in when shooting magnum, and the magazine springs are really poor quality so there is a lot of failure to feed issues I'd say you loaded the magazines the day prior. Had to fix that myself with quality wire springs I made myself. Had to also replace the buffer spring on my lower (which was already set up for the RAS -12) with a stronger one to stop getting the failure to eject. Also I'm not a fan of the chokes it comes with not being labeled.

This is ignoring is proprietary magazine that are very overpriced.

Also while trying to fix some of these issues I stumbled on a video where it misfired because the spring holding the pin back is not strong enough so when the bolt released forward it fired.

Lots of these issues can be resolved by simply using better quality springs.

I was not expecting a gen 12 I was expecting something that worked. Seems like I'm not the only one with issues if you look this thing up.