EVOLVA FUTURE TECHNOLOGY Tactical Flat Top Dual Ring Scope Mount (30 mm with 1" Inserts Ring) Install in seconds with finger adjustable quick release cam lock Works with both 30mm and 1inch main tube rifle scopes Machined from aircraft grade aluminum alloy Designed for 30mm scope rings with 1 inch polymer inserts included Front ring top and both side feature picatinny for mounting laser flashlight and compact red dot and so on accessories.