THe HiperFire Hipertrain AR-15 Trigger Demonstrator allows you to demonstrate trigger function for the most common modern sporting rifles. The simple frame design allows you to attach any AR-15 grip you would like to achieve the same feel as if it were on your own rifle. This makes the high performance trainer a great option to train and develop muscle memory. FeaturesCast Aluminum, Machined, Type III HardcoatCerakote ColorsAttach Any GripInstall Any Safety/Selector Note: Pistol grip, trigger and safety selector not included.