"The first image is an AK Krink SBR chambered in 5.56 mm. The second image is a standard Romanian Guard's AK chambered in 7.62 x39 with a Smith sound Suppressor. (100% reliable and very quiet.) The third image is the same AK with a Smith Enterprise Vortex Flash Hider. The vortex remains the best flash suppressor I have ever tested. I have tested the Vortex on M1As, AR15, AR10 and now the AK 47."
AK 47 Krink SBR chambered in 5.56 mm: