FITS: 10/22 RBI Blue & SS, .22; 10/22 RP Synthetic Blue & SS, .22; 77/22 R, RS, .22 LR; 77/22 RH, RSH, .22 Hornet; 77/22 RM, RSM, .22 Mag; 77/44 RS, .44 Mag; M-77 MK II Express; M-77 MK II Left Hand; M-77 MK II Standard; M-77 MK II Ultra Light Mfg: Ruger
