Feature a Expand Optic Setup Easily: 30 / 34mm Mount Assembly Kit Lets You Add a Red Dot Sight on Top of Your Scope a All-in-One Mount Kit: Includes Scope Ring Tops, Short Picatinny Rail, Riser Mount and Hex Key for Quick Installation a Flexible Mounting Options: 2 Red Dot Footprint Adapters (MOJ & MAG) and Picatinny Mount Fit Different Optics a Adjustable Fit for Versatility: 4 Pairs of Screws in Different Lengths Allow Easy Matching for Various Setups a Dual Angle Mounting: Designed for 34mm Monotube Scopes, Supports Vertical or 45Adeg Offset Red Dot Installation Specification Material: 6061 T6 Aluminum Alloy Weight(net): 40.2g/ 1.42oz Finish: Matte Black Footprint: MOJ and MAG Adapter Riser Mount Length: 27mm/ 1.0in Scope Ring Length: 50mm/ 2.0in Mount: 21mm Picatinny 34mm adapted Scope Rings SKUs: SCTM-52, SCTM-53, SCTM-54, SCTM-57, SCTM-58, SCTM-60, SCTM-61, XASR-3014, XASR-3015, XASR-A01, XASR-3050, XASR-3055. 30mm adapted Scope Rings SKUs: XASR-3040, XASR-3045, XASR-3001, XASR-3002, XASR-3003, XASR-3005, XASR-3006, XASR-3100, XASR-F3100, XASR-3011, XASR-3012, XASR-3013, XASR-3016, XASR-3017. Video