Spuhr's SM-3002B MRO Mount was designed to be one of the most rugged mount on the market. Designed specifically for the Trijicon MRO Red Dot, the SM-3002B utilizes front and rear recoil lugs to ensure a secure hold. Compatible with all Picatinny or STANAG NATO Rail. Specifications: Lower 1/3 Co-witnessHeight: 42 mm/1.65"Weight: 59 g/2.1 oz Spuhr Trijicon MRO Lower 1/3 Co-Witness Picatinny Red Dot Mount SM-3002B