By mounting your phone to your picatinny rail, you not only keep your Bullet HP controls at the ready but you also get better range which will help you utilize the built-in video recording features that keep the Bullet HP call & decoy controls at your fingertips. Constructed of durable nylon, this mount is light weight and extremely durable. Quickly drop-in your mobile device, lock it in place, and you're ready to start calling. Adjusts to fit mobile devices that are 2.2"- 3.3" in width. Works with most any picatinny rail mounts for bow, rifle, shotgun, etc.