You should be able to buy right from Corey there. My first ones were the scorpion magnum and the rimfire. Only wish I would have done a 556 at the time too. Get the all titanium, you won't regret it. I also have the short .30 cal for the 308. Their rimfire can they tested with an AR 15 and it survived but they don't recommend it. It is rated for up to a 22 hornet though..... I think I need one of those again
