Ade Advanced Optics Heavy Duty Quick Detach Qd MEDIUM Scope Rings Set 30mm 1" Picatinny with Accessory Rail Tops, 30 mm, 1 inch Robust and User Friendly Ergonomic Quick Detach/Lock Lever Fully Adjustable to Fit on Any Picatinny Rail Built with extra material for heavy duty us Metal size inserts for use with both 30mm and 1inch scopes Medium 30mm center height. See-Thru Design Standard with six sided hexbolts for maximum hold under extreme conditions and automatic weapons fire