I'm glad it's all metal. I zeroed the rifle at 50 yds. My dust cover hasn't fallen off. I've only shot 110 rds through it, but so far it looks like it is a solid performer. I'll be using it as a practice rifle for my 3 gun setup when I run out of 5.56. This means that over the course of this year I'll probably fire tens of thousands of rounds through it. I'll keep us all posted on how it hangs.