i was thinking the same shit....i can't see it
yugoslavian sks rifles have that funny looking extension on the end that a rifle grenade slips over,you then flip up the extra sight and close the gas port via a little lever and load a blank cartridge.when you fire the gases from the blank propel the grenade towards the target.think powered hand grenade
nice looking stock!
This is with out a doubt the best photo of an SKS I have ever witnessed. Great looking piece.