This is now available at RedWolf Airsoft... "This Madbull Airsoft Amplifier Flash Hider is a fully-licensed replica of the Noveske KX3 Flash Hider. Made from high grade Aluminum with a Matte Black Oxide finish, it has the official Noveske logo and trademark etched onto the side. One of the most interesting aspects of this product is the 'sound adjusting' feature found in the internal tube. What this means is that you can adjust it to make some your AEG emit some cool sounds.

The special design gives it a 'Metal-Punching' noise when shooting. Comes in a 14mm CCW fitment."