This one-of-a-kind upper was designed, built, and tested — one of the most rigorous tests in the history of DD — for special operations. Now, a limited quantity has been made available to the public.

The Contract Overrun upper receiver group is built for maximum maneuverability with its 11.5" Government-profile barrel and Carbine length gas system, ensuring smooth and reliable cycling. Equipped with a DD4 7.0 M-LOK rail, it offers plenty of space for accessories without adding extra weight. This quick and fast-shooting option comes complete with a Front Sight Post, rear sight, M16-profile bolt carrier group, and a Grip-N-Rip charging handle. All NFA rules apply.