Complete Uppers

Colt's Manufacturing, Complete Upper Receiver, 223 Rem/556NATO, 16.1" M4 Barrel, Black Finish, A2 Fixed Front Sight, Magpul BUIS Rear Sight

Colt's Manufacturing, Complete Upper Reciever, Fits AR, 223 Rem/556NATO, 14.5" Chrome Lined Barrel, 1:7 RH Twist, Magpul Flip-Up Rear Sight, M4 Contour Barrel, Standard Sling Swivel, Bolt Carrier...

The MK111 PRO Upper, features the PWS long stroke piston system. Internally, this line offers the tried and true system. Featuring a free-float MLOK handguard, with the fully forged upper. The MK111...

High quality components and precise manufacturing makes Colt Products ideal for both new shooters and experienced gun owners. The durability, reliability and excellent build quality will provide...

The durability, reliability and excellent build quality of Colt uppers will provide years of service you can count on. The complete upper comes with everything one needs.

The PWS MK1 PRO line features the tried and true PWS long stroke piston system. This line is perfect for shooters looking for a cost-effective piston system firearm without sacrificing the...

  Knights Armament Company SR-15 CQB Mod 2 Complete Upper 11.5" 556 The SR-15 E3 Mod 2 series' 5.56 mm NATO barrel is manufactured for military grade durability, and is free-floated inside a URX4...

  Seekins Pro Series 12" 223 Wylde Complete Upper The SPROV3 is designed to use on its own or with a suppressor. It is configured to keep the overall length to approximately that of a standard...