This Daniel Defense DDM4 300S complete upper receiver group brings DD's famously overbuilt quality to the 300 Blackout platform. The 10.3-inch barrel is right in the sweet spot for 300 BLK, a cartridge purpose-designed to run efficiently from short barrels and to pair beautifully with suppressors when shooting subsonic loads. Daniel Defense cold-hammer-forged barrels and rigorously tested bolt carrier groups are the reason their uppers command such loyalty among professionals. Drop it on any mil-spec lower and you have a compact, hard-hitting setup for home defense or hog control.

In stock and ready to ship straight to your door from Dawson Defense, an Arizona-owned licensed dealer.