Primary Arms Slide Mount Magnification Flip Lever Black. Unlike fixed levers the Slide Mount Magnification Flip Lever has a built-in hinge mechanism allowing the user to position their lever in a low-profile position when not in-use. This lever also has two different height settings providing versatility for competitive or tactical use. The dovetail attachment system allows for quick and convenient installation with any compatible optic. Specifications for Primary Arms Slide Mount Magnification Flip Lever: Manufacturer: Primary Arms Color: Black Fabric/Material: Aluminum Finish: Anodized Condition: New Gun Make: AR Platform Gun Type: Rifle Gun Model: AR-15 Package Contents: Primary Arms Slide Mount Magnification Flip Lever What firearm models does the manufacturer say Primary Arms Slide Mount Magnification Flip Lever is compatible with? The manufacturer says that Primary Arms Slide Mount Magnification Flip Lever is compatible with AR-15Primary Arms 210106: Slide Mount Magnification Flip Lever Black