Welcome to the group!
When the Norincos 56S and all their variations were first brought into the land of shall not be infringed, we were still recovering from Vietnam so "those commie rifles" were not an easy sell.
Fast forward a few years and people started to not only develop a fondness for the Automatic Kalashnikov but realized that the Chinese variant were among the best commercial versions imported here. Arguably the best trigger of any factory made AK/AKM, the 56S fixed stock, 56S-1 underfolder and 56S-2 side folder suddenly started to take off in popularity. Unfortunately it was after George Bush the First demonized them as being evil, banned importations but allowed modifications to a so-called "sporting purpose" which brought us the MAK-90.
What you describe, and by the picture is an excellent example of the 56S-1 underfolder. Sile was one of the premier importers and as long as the barrel is good having been well used only hurts the value a small bit. Normal markings were as you describe with the serial number abbreviated to 4 digits on smaller pieces. Back then the rifles were marked as desired by the importer, so markings can and will vary on the 56S series.
When the Norincos 56S and all their variations were first brought into the land of shall not be infringed, we were still recovering from Vietnam so "those commie rifles" were not an easy sell.
Fast forward a few years and people started to not only develop a fondness for the Automatic Kalashnikov but realized that the Chinese variant were among the best commercial versions imported here. Arguably the best trigger of any factory made AK/AKM, the 56S fixed stock, 56S-1 underfolder and 56S-2 side folder suddenly started to take off in popularity. Unfortunately it was after George Bush the First demonized them as being evil, banned importations but allowed modifications to a so-called "sporting purpose" which brought us the MAK-90.
What you describe, and by the picture is an excellent example of the 56S-1 underfolder. Sile was one of the premier importers and as long as the barrel is good having been well used only hurts the value a small bit. Normal markings were as you describe with the serial number abbreviated to 4 digits on smaller pieces. Back then the rifles were marked as desired by the importer, so markings can and will vary on the 56S series.