YouTube channel BombBuster72 has created a video showing how the trigger group for the AK-47 functions. Using CAD, he based the video off the Tapco G2 double-hook trigger system.
Be prepared to nerd-out, but mad props to the fellow for creating all of these from scratch and then animating them appropriately.
Its very easy to see the difference between this and the ARs style trigger group (which he also did a video on). Ss he states, its easy to do a “cold-war comparison”.
Based on this, it is very easy to understand why the AR trigger aftermarket has soared compared to the AK. Its much easier to create a precise trigger with the AR movement over the AK.