100% Risk Free, Lifetime Warranty Only from Monstrum Tactical, the Ruger 10/22 Modular Picatinny Rail Mount Set is a dedicated optic mounting platform built specifically for the Ruger 10/22, allowing for precision mounting of your preferred optic. The package includes both a front (2 slot, 1 inch) and a rear (3 slot, 1.5 inch) Picatinny rail section that install directly to the Ruger 10/22 factory mounting holes via the included set screws. The rear section can be used singularly for use with red dots or smaller optics. Or the sections can be used in tandem for use with a pair of rifle scope rings. The rail sections are compatible with all Picatinny or Weaver based optics. Crafted from lightweight aluminum, the front and rear rail sections are 0.4 and 0.7 ounces in weight. Includes: Ruger 10/22 Picatinny Modular Rail Mounts, Screws Materials: 6061 Aircraft Grade Aluminum Compatibility: AR-15, Rifles with Picatinny rails Weight: 1.1 oz Length: 1.0 inch, 1.5 inch Color: Black Warranty: Lifetime