I'm new to the world of NFA, but now I'm certain my first stamp won't be my last. After a painfully long wait, I finally got to assemble my SBR. I modeled if off of the Navy's Mk18 Mod 0 using an LMT lower with a 10.5" LMT upper. A Knight's Armament RAS, Aimpoint Comp M2, CQD mounts and a CQD convertible sling finished it out. All that remains is to replace the Aimpoint's QRP mount with a Wilcox, and then shoot it until it breaks.