I'll let him know about the cleaning kitThere is no adapter that I am aware of. Pretty much zero demand for one.
Most people view the rod as purely cosmetic. Its short (too short for most other rifles) and steel which can damage barrels, chambers and crowns.
If someone uses the rod for cleaning an AK, they likely use the existing mil surplus cleaning kits that fit in the trapdoor of the AK buttstock. These are designed for field use, so they are compact, but the parts are not intuitive to use, and the whole thing is clunky.
Even the nice folks at Kalashnikov USA don't think the cleaning rod is a good option. Here's what they recommend:
AK Cleaning Kit
Kalashnikov USA is proud to introduce the best cleaning kit for your AK platform. Big functionality in a small rugged package that easily fits into a pack or range bag. A chamber brush, carbon scraper, gas tube brush & mop help to clean more than the bore and keep your bolt cycling reliably. No...kalashnikov-usa.com
The whole set is likely to be cheaper than having someone make an adapter, the brass rod and standardized brushes will clean rather than damage your barrel, and the whole thing is not much larger than using a mil surplus two-chamber solvent/lub bottle and cleaning kit.