The Auxetik muzzle brake is available at www.sintercore.com
Material used: Inconel nickel-based metal alloy. Process used: Direct Metal Laser Sintering.
M16A1 shown with DD MK18 10.3in upper is a federally registered Title II machine gun.
Last video clip shows firearm with stock removed and buffer tube pressed against cheek to show recoil mitigation and lack of muzzle rise due to our proprietary design.
http://youtu.be/pZY90w0kHFA