Barrel length - FAB Defense M4 SKS Complete Chassis System, w/ M4 Buttstock

Apparently I have a carbine type setup on my SKS. This stock did not fit with my Norinco SKS. I know this isn’t a fault of the product. But the low star is because of the lack of information on the stock description, in that it is only compatible with certain barrel lengths. I reached out with other messages and feedback and never received a response. So the low star can also include a gap in customer service once a product is paid for.