As Otis Technology expanded to the international market, there was a need to expand its systems to cover former Warsaw Pact weapon systems, with the AK-47 series at the top of the list. There has never been a truly dedicated AK-47 cleaning kit. AK-47-style rifles come with a rod (which were often lost) and fixed-stock models had a compartment in the back of the stock which held a bore brush made of nylon, a T-handle for the rod (kit body), slotted tip, punch and sight tool.
I mostly use a pressure washer after shooting a thousand rounds and then lubricate with leftover olive oil from sardine cans. But if you want to get fancy, Otis is the way to go.