LaRue Tactical QD Scope Mount 34mm Black. It is available in 34mm or 30mm rings. The height is set for 1.285" centerline of the scope above the M1913 Picatinny rail. Because the LT120 sits the scopes lower to the bore they will not align properly with weapon-mounted clip-on night vision devices which sit at 1.535. Additionally it will not work with scopes that have an Objective Housing larger than 56mm which is the largest that will fit and still allow the use of lens caps. The mount has a 0 MOA built-in cant. The LT-120 will also accommodate the US Optics T-Pal with its larger turret body. The generous 2.9" ring spacing accommodates large turret blocks with ease. The LT120 comes complete with spare mounting screws with wrench QD adjustment wrench and Instructions. Specifications for LaRue Tactical QD Scope Mount: Manufacturer: LaRue Tactical Color: Black Package Contents: LaRue Tactical QD Scope Mount LaRue Tactical LT120-34: QD Scope Mount 34mm Black