American Tactical's Milsport complete upper receiver gives your AR-15 lower an instant second personality in .300 Blackout. Built around a 16-inch barrel with an M-LOK compatible handguard, it drops onto any mil-spec lower in seconds with two takedown pins, no gunsmithing required. The .300 Blackout cartridge shines from shorter barrels and runs equally well with supersonic hunting loads or heavy subsonics through a suppressor, making this a versatile addition for hog hunting, home defense setups, or quiet range sessions. M-LOK slots accept lights, grips, and other accessories directly.

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