The NC Star AR Riser and Quick Release Weaver Mount MARFQ makes mounting a sighting system on a rifle much easier with its lightning fast quick release system. This NC Star Mount will add almost an inch to the base height making it possible to clear even the tallest front sight posts. Features of NC Star AR Riser Weaver Mount Made of solid anodized aluminum STANAG ring compatible Includes: NC Star AR Riser and Quick Release Weaver Mount MARFQ