Primary Arms Classic Micro Red Dot Rider Mount Absolute Cowitness 1.50 in Black. When looking down the iron sights the red dot will be placed in the middle of the Micro dot's scope tube. The light weight design constructed of anodized aluminum is easy to install. The riser Features a lifetime warranty. Specifications for Primary Arms Classic Absolute Cowitness Micro Dot Riser Mount: Manufacturer: Primary Arms Color: Black Finish: Anodized Gun Make: AR Platform Gun Model: AR-15 Gun Type: Rifle Fabric/Material: Aluminum Co-Witness: Absolute Red Dot Sights-Footprint: Not Applicable Optic Cut: Aimpoint T2 Height: 1.5 in Condition: New Gun Rail: Picatinny Package Contents: Primary Arms Classic Absolute Cowitness Micro Dot Riser Mount Primary Arms Classic Micro Red Dot Rider Mount Absolute Cowitness 1.50 in Black 910052