The UBR works but requires a little file work. Nothing major just take it down until the slide doesn't hit the stock. I left mine so it just touches the stock when all the way back, it's slowly wearing a little groove in what's left. And that's a great idea, I noticed the lug scratches as well. And I second that, they fit me in on short notice as well for the barrel swap. Can't wait for that 6.5 Grendel Varmint! Gotta get some guns sold!
ATRS err's on the side of caution because if they said all stocks fit then I am positive some owner will call and complain their stock is getting marked up. This way the liability lies with the owner and not ATRS.
Last edited: