We have Complete AR-15 Upper Receivers including barrels, buttstocks, buffers, spring tubes, and the correct parts kits for installation on your lower receiver. Whether you’re building your own or customizing an existing AR, we’ve got the supplies to meet your AR-15 upper receiver needs. Browse our many calibers, from 5.56mm NATO and .300 AAC Blackout to pistol calibers like 9mm. Have fun and let your imagination go wild with the possibilities. Some shoppers buy multiple different receivers all at once to give themselves variety and versatility for their AR rifles or AR pistols.
The Adams Arms P1 is a lightweight and highly durable complete upper assembly for an AR-style rifle build. It comes chambered in 5.56 NATO with a 16 inch barrel. Features include an optics ready flat-top, a heatshield hand guard, and a forward assist. Get this upper today for the best price online from us.