TufForce 7 Slot Rail mount for Ruger-SR-22, on both side or bottom, MT-RG7 TufForce 7 Slot Rail mount for Ruger-SR-22, 75mm / 3" length Two screws come with to install on hand guard directly install on both side or bottom of hand guard 6061-T6 Aluminium, Black Hard Anodized finish one 3" rail cover come with together