These are genuine Soviet made PKM fire control groups.
We have two available - you can see the exact one you are purchasing.
I have no way of testing these work, but the selector switch moves and seems to click into both positions.
No. 1: This one is missing the pistol grip. It still has remnants of the old rivets present.
2. This one includes the pistol grip, pistol grip screw, and does not have any remnants of rivets on it.