Primary Arms SLx Micro Dot Riser Mount - 2.26in Height Black. 26 Micro Dot Riser is a rugged red dot mount with an elevated optical centerline for a comfortable heads up posture. This taller design doesnt block the use of standard height AR sights. Specifications for Primary Arms SLx 2.26in Micro Dot Riser Mount: Manufacturer: Primary Arms Color: Black Height: 2.26 in Package Contents: Primary Arms SLx 2.26in Micro Dot Riser Mount Primary Arms 910119: SLx Micro Dot Riser Mount - 2.26in Height Black