I have one that has been SBRd. These gents are correct. Don't buy your stock until you get your stamp. They are already threaded. I bought a 3 lug adapter for mine and I put a GEMTECH on it. If you have questions PM me. I got my trust from Heavy D. Dobbs Defense did my engraving. They have $125 price for the form 1, engraving and pics.
Yes. He has an online special. 125, does all the paperwork and engraving.
Thanks everyone - ODT is great....