The Polymer Hand Stop is made from high density injection molded polymer and features M-LOK mounting points for a flush fit on any M-LOK rail, utilizing a rounded inner profile for comfort and a positive grip on the rail system. The integrated durable barricade design allows for multiple handling applications. For your safety, Trinity Force recommends this part be installed by a competent, qualified gunsmith/installer with an understanding of the weapon platform that the part is being installed on. Spruce up your AR pistol today!!