If you're looking to build something on an AR15 platform and want the absolute best semiautomatic tactical rifle upper, consider building around this POF-USA Minuteman upper. The Patriot Ordnance Factory Minuteman provides the end user with some of the most impressive innovations in the industry, from the 4150 nitride-treated steel barrel with three-pronged flash hider to the Strike Eagle ambidextrous charging handle that is built for speed & comfort. This complete Minuteman 16.5" upper receiver assembly is chambered for 5.56x45mm Nato, E Squared chamber and utilizes semiautomatic direct impingement technology. It features a Renegade rail that's M-LOK compatible. It also has four integrated quick-detach sling mounts. This MILSPEC upper receiver will make your build something special.
Specifications:

Type
Caliber	5.56x45mm NATO
Sights	None, Optic Ready
Barrel Length	16.50"
Barrel Material	4150 Chrome Moly Vanadium Steel
Twist
Barrel Description
Barrel Finish	Black Nitride
Receiver Description
Receiver Finish	Patriot Brown
Handguards	14.50" M-LOK
Handguard Finish	Patriot Brown
Barrel Length Range	16" to 16.99"