NcStar Vism Tactical Scope Rings Features The NcStar Vism Tactical 30mm scope rings are engineered to mount securely to Picatinny Weaver and MIL-STD 1913 rails. A hexagon-shaped mounting nut with torque holes allows precise tightening using an Allen key for a secure and repeatable fit. This makes them a dependable option for shooters seeking durable Picatinny scope rings with flexible mounting capability. Removable 1 inch inserts allow compatibility with both 30mm and 1 inch scope tubes. Black anodized aluminum construction provides strength while keeping overall weight low. The high ring height supports proper optic alignment for modern rifle setups. NcStar Vism Tactical Scope Rings Specifications Manufacturer: NcStar Model: Vism Tactical Scope Rings Category: Scope Rings Firearm Type: Rifle Tube Diameter: 30mm 1 inch with inserts Ring Height: High Ring Height Actual: 1.50 Optic Centerline Height: 1.50 Overall Ring Height: 2.4 Mount Type: Picatinny/Weaver Material: Aluminum Finish: Anodized Black Pieces: 2 Includes: Mounting Tool Weight: 2.5 oz Warranty: Limited Lifetime