My experience with this pistol has not been good. It is extremely over gassed resulting in double feeds and stovepipes. I sent it back to Anderson for repair. They gave me a heavier buffer and changed an O ring in the extractor. It was better but it would only feed reliably if I used reloaded ammo that was low powered. Tried a mag with 5.56 and only got 3 rounds through it before it stovepiped. After 90 rounds it is filthier than any AR I have ever used. I sent it back again. They changed the barrel and let me know that it seemed to run fine but claimed that it misfeeds when they used my lower that has a Law tactical folder. I’m sceptical of this considering I had the problem before I put the folder on it. When I get it back I will put an adjustable gas block on it, I think that will fix it. I like the gun a lot when I’m using light ammo but in my opinion it’s not worth the problems.