More than likely an early, Chi-Com Type 56 Carbine made with either Russian help or from late Russian-parts, that was later converted to the "Cowboy Companion"-variation for the American marketplace, refurbished with a new, non chrome-lined 16-inch barrel. Remove the stock and look for an Arsenal /26\-stamp just below the wood-line, below the serial-number area.
The earliest Sino-Soviet Type 56's did not have the three Chinese characters for "Type 56", only a serial-number, usually starting with an "AA xxxx" or some other near variation for a serial# prefix, ala the Russian-style of serial-number designation.
I remember seeing the majority of these converted 16-inch Chi-Com SKS's that were made up from REALLY early Sino-Soviet rifles. There were dozen's of importers at the time (late 1980's/very early 1990's). Damn shame really, not that they cared when they were importing and wholesaling them for less than $89.00 out the door, all day long.