Parts for SVD's can be hard to find, and availability varies .  Here are some sources .


Gunbroker and Ebay have some parts.   Cleaning rods / Kits , Scopes, and some times Mags.  Parts, accessories, stocks.    UK  Hand guards, drop cases, cheek rest.  USA

RTG    Mags, Cleaning kits, ect .   USA  Scopes and mounts.

Legion USA  Wood Stock Set