A Universal Hands-On Trainer (UHOT) for use with an interactive training simulator and software plug-in that provides the “fit” and “function” of a piece of equipment provided with tactical handgrips but not the “form”. The UHOT has an assembled shape and structure that is both scaled-down and different from that of the real piece of equipment. Because the UHOT does not replicate the “form” of any piece of equipment, the UHOT is not limited to training only one piece of equipment. Different tactical handgrips may be attached to the UHOT to provide training with the correct “fit” for a wide variety of equipment. The UHOT may be provided with a universal interface and various adapters to attach different tactical handgrips.