The Hardened Arms SMC is a new muzzle device from Hardened Arms developed with the intent of eliminating muzzle rise on short-barreled and full-auto applications.  Below is the description taken directly from the product page:

“Dedicated to innovation Hardened Arms is pleased to bring the HD SMC to the shooting public. Using SMC muzzle redirection technology this muzzle device delivers flat shooting and a linear recoil impulse. Ideal for short barreled and pistol ARs it helps direct the noise down range from the shooter while providing the control only found in traditional two or three chamber muzzle brakes. Available in 1/2-28 and 5/8-24 for your next build its the perfect muzzle device to tame your next short AR build.”

Does it work?  Watch the video and tells us what you think!