From the Russian American Armory Website:
THE SAIGA IS AN AUTOLOADING RIFLE with a hunting buttstock and fore end (plastic). The Saiga rifles are intended for hunting big and medium-sized game under different climatic conditions. The rifles are developed on the base of the venerable Kalashnikov assault rifle and chambered for 7.62×39, . 223 Rem (5.56×45), and 5.45×39 cartridges. Additional buttstock available with adjustable cheek rest.
The Saiga rifle was designed for markets where there are laws against “evil features,” like those in California.