In 2012′” RS Regulate began rolling out the first models of the AK-300 Modular Side Mount System'” which now features six fully modular uppers and nine different lowers: a front-biased'” a rear-biased'” and a full-length lower for most Eastern European AK side rails; a front-biased and full-length lower for Yugo/Serbian rifles; a PSL and and Romanian M10/RH10 rifles; a Century Arms proprietary side rail; and even a rear-biased lower for Czech vz. 58s.
RS Regulate Century Proprietary Front-Biased Lower, Side Modular Mount, Fits Century Arms Proprietary Railed Rifles, Matte Finish, Black AK-308M
