2 screw and retaining nut sets available at $13.95 + $1.50 S&H in the link below.
https://www.akfiles.com/forums/threads/wts-russian-akm-pistol-grip-screw-set-2-available.460751/
https://www.akfiles.com/forums/threads/wts-russian-akm-pistol-grip-screw-set-2-available.460751/