Presma 30mm Quick Release Medium Profile Scope Rings for Picatinny/Weaver Rails Black. Presma CNC machined these Riflescope Rings from aircraft grade aluminum alloy to create a durable platform that is significantly lighter than steel and other heavy metals. These Presma Quick Release Rifle Scope Rings feature a see through hole at the bottom that can be used as a front sight when you need it most. The quick release button and four screws firmly secure these rings to your scope and rail providing the perfect connection that will enhance your accuracy and firepower in the field. Quality optics deserve quality mounting solutions. Get yours today with these Presma Wing Series Scope Rings. Specifications for Presma Quick Release Scope Rings for Picatinny/Weaver Rails: Manufacturer: Presma Finish: Matte Ring Quantity: Single Quantity: 1 Fabric/Material: Aluminum Alloy Condition: New Color: Black Mount Type: Weaver Features of Presma Quick Release Scope Rings for Picatinny/Weaver Rails: Medium Profile See Through Rings Picatinny/ Weaver Rail design Upper Half Ring Top features 2 slot rails Matte Finish Hard Black Anodized Aircraft Grade Aluminum Alloy Precise CNC Machined Center lug machine into position 3mm Allan wrench includes extra screw 4 screws to fasten scope ring to ensure best security Quick Release Button Attached securely to Picatinny Rail Package Contents: Presma Quick Release Scope Rings for Picatinny/Weaver Rails Presma PRWG030: 30mm Quick Release Medium Profile Scope Rings for Picatinny/Weaver Rails Black