A non-reciprocating, left-side charging handle for the AK platform is set to go on sale in January.  The Ratchet Charging System, or RCS, is a drop in replacement gas tube that incorporates a charging handle with bolt hold open.

The RCS has been under development for several years, and the production model appears to be the third major revision of the design.  Steve wrote about the first generation here and the second generation here.

Dublin AK Systems developed the RCS, and the product will be sold through Parabellum Armament.