[PolishRon]

What currently available reciever is the most authentic (correct stamps for axis pins, selector, under folder etc.) for a under folder build?

 

[brownstown]

IMO...I would think FLAT or NoDak receiver. These are the two I would choose from.

 

[brownstown]

This pic if from NoDak Spud web site.

Model NDS-1P with plate "Premium" Polish or Hungarian AKMS underfolder receiver. This variant has the pistol grip reinforcement plate installed. caliber 7.62x39

This is the reciever I would go with. IMO they are the best

 

[PolishRon]

What is FLAT? Is it a company or do you mean flat as in bend it yourself?

 

[brownstown]

What is FLAT? Is it a company or do you mean flat as in bend it yourself?

As in bend it yourself.