jason;
I took a MAK90 and fitted it with all the "tacticool" crap that was for sale on the market, after the original thumbhole stock split from recoil. (Junk, those things)
I put a new adjustable trigger in, ghost ring / crosshair sights, black plastic furniture, etc.
It sucks.
The plastic furniture on front melts and smokes if you shoot more than 30 rounds quickly. The adjustable plastic stock required EXCESSIVE dremelling to fit, and feels ... wonky.
The peep rear & crosshair front sites suck. I thought they'd be an improvement but the crosshair front site completely washes out when you sight the target. Requires constant eye focusing between target and front site, which QUICKLY fatigues your eye.
The adjustable trigger WAS worth it.
But even with all of that, PLUS handloaded ammo, it still shot minute-of-pie-plate at 100 yards.
I'll put it back to wood furniture someday. In the meantime it's been collecting a LOT of dust for the last 5 years.