I don't know how Doc pulled it off but, to keep me off the streets during recoup, (She says I'm overdoing) She got me a AR kit gun with a stripped Essential Arms lower. I have spent the day putting it together, with just info off this sight, and Brownells. I have to put the rail front gas block on it still yet, but I have had a blast doing it. Oh, I forgot, She got me a scope, and 1000 rds of PMC with it to. Called it an early birthday present. Heck, I'm thrilled if she doesn't buy me another present the rest of my days. And no comments on my Duck. That was from my Grandaughter.