Is it set up for a scope? Or AK style mags?

Short barrel paratrooper conversion?

Standard configuration, with 10 round internal magazine?

Any model designation stamped on the receiver?

 

Don't see Keng's stamped guns very often. Don't see Poly USA stamps very often either.

I guess that makes them rare in the sense that that paired stamping is uncommon. But it doesn't make them rare with regard to value.

Value is determined largely by the model variant and overall condition.

 

 

A Poly Tech sales brochure from back then