Green Blob Outdoors (A-081) 30mm Rings Black Rifle Tactical Low Profile Picatinny Scope Rings W/ Accessory Rail for Lasers, Flashlights, Nikon, Leupold, Vortex, Burris We are centrally located and ship from Central Texas All heat treated steel and aluminum construction and Precise machining (N49) for Ring bases are milled as dual, tough units, and both ring tops feature Picatinny tops for mounting additional accessories. Center Height: 21.5mm, Weight:150g, Fits all scopes with a 30mm body tube Ring tops feature picatinny rails for mounting laser flashlight and compact red dot and so on accessories.