Action Army AAP-01 Black Mamba CNC Upper Receiver - Kit B Redwolf Under Mount Rail: The original

Under Mount Rail: The original USP rail is specific to HK guns

Designed by Ken’s Props

The optional Gold valve expands the capabilities of the system even further by making it more flexible and adaptable when tuning for different rifle configurations

This allows you to shoot the air tank virtually empty with no performance decrease

Action Army AAP-01 Black Mamba CNC Upper Receiver - Kit B Redwolf Under Mount Rail: The originalYet another upgrade for your treasured AAP 01(s) in the form of an aluminium CNC'd solid upper receiver. So, what does it offer? It's solid CNC'd aluminium for a start with a huge picatinny rail along the top and 5 point rail under the front section. The Black Mamba upper receiver also includes iron sights, adjustable at the rear and an extremely cool looking compensator or 'muzzle brake' in Murka speak. The AAP 01 Black Mamba CNC Upper receiver adds