A video I did comparing different Krinkov muzzle devices verse having no device at all. Devices in the video are the old style krinkov duck bill, new style bulgarian cone brake, and a 4.5 inch bulgarian cone brake. The first gun is a Zastava M92 and the second gun is a Draco that I converted to a rifle.
http://www.youtube.com/watch?v=SfIfR3R6F_I&feature=plcp
