5.56 Nato chambered, 16" assembled upper receiver with 12" Generation 1 fat Quad picatinny rail handguard.  Barrels are QpQ nitride treated with carbine length gas system and a basic A2 muzzle brake.  A very good basic upper receiver that Apache has been selling for years at or near the $295 price point.    On sale now for $249.95

Every upper is assembled by Apache Armaments personnel using their labor intensive techniques and must pass both manual cycling testing and multiple rounds of test firing.  As your upper is guaranteed to function with brass cased commercially produced ammunition, we make sure that it works before it leaves our facilities. 
This assembled upper (and Bolt Carrier and Charging Handle when bought with this upper) qualifies for the Apache Lifetime Warranty*

To add an optional Bolt Carrier Group and Charging handle, add for $80 by choosing the option.