ProMag SKSA5: The SKS-A5 is a 20rd magazine designed for SKS 7.62x39 rifles and carbines. The magazine body and follower are constructed of a proprietary DuPont Zytel based polymer to ensure a long service life. NOTE: Due to the variability in mag-well dimensions in the wide variety of manufacturers of the SKS rifles and carbines, and in how they have been converted for the use of detachable magazines; this magazine may require hand-fitting, or may not be suitable for your individual firearm.