This is a Milled type 3 Bulgarian receiver built up with a matching polish parts grenade launcher kit (has gas block switch). The only part not matched to the rest of the kit is the gas switch. Per research only 300 SSR-99P rifles were made in one run by Arsenal using these harder to come by polish kits. This kit includes an uncut, chrome lined barrel. These are more rare than the Bulgarian or Hungarian part guns.
There is no G indicating that this is a Gordon Tech assembled rifle. I have only put about one magazine through this gun after years of storage and it runs flawlessly (Just remember to have the gas switch on the right setting)
I am asking $1,800 + shipping
This is the closest you can get to a military grade AK without buying an original Russian parts kit with a cut receiver for several thousand dollars plus labor to reweld the receiver.