Dude...Don’t waste money or time building a 5.45 in a Vietnam era unreliable over-complicated rifle.
I’ve got ten 5.45’s in AK’s (all different barrel lengths) and they have not once failed to function reliably.
Why try to mix the perfect cartridge with the most worthless “fighting” rifle ever invented?
Dude, did you miss my reference tot he Bulgy in ATI furniture???