I got a Top Tech RK103, which am i getting some degree of regret. The stock is long* and i cannot mount my dummy AK bayonet to it (i made a plastic replica of the AK 74 bayonet).
*i am 1.76m (relatively short), and taking aim is somewhat harder than with your normal warsaw-pact standard AK, due to increased distance from eye to rear sight.
But the repentance part comes when the LCT AK74 Stock doesn't fit, unless dremmeled the hell out of it, and, flash hider does not budge (i suspect that front sight and flash hider are one piece).
Internally i cannot complain, 380ish fps stock and 50 meter pinpoint accuracy out of the box.