Heckler & Koch MR556 A4 Upper Receiver, 223 Remington/556NATO, 16.5" Barrel, Threaded 1/2X28, M-LOK Handguard, Anodized Finish, Black, Fits AR-15 Lower Receivers, Includes Bolt Carrier Group, Charging Handle, Buffer Weight and Buffer Spring 51000384
We are currently in the process of updating our inventory tracking and category organization to provide a better shopping experience, but don't worry, we are still open for business. If you make a purchase and some, or all, of the items you purchased are not in stock, I, as the business owner, will email you personally to apologize and offer a solution that works best for you. Your patience during this update and upgrade process is greatly appreciated.
