Ring's Manufacturing now offers more than 25 different configurations of the standard M4 rifle in its line of simulated firearms called Blueguns. With the variety of multiple barrel lengths, rear stock settings, and rail system configurations, you are able to train with the exact model carried on duty. All rail system models will accept your accessories for an even more realistic training scenario. With these additions, Ring's has increased its product line to more than 250 items including handguns, long guns, accessories, and training magazines. Upon special order, Ring's also manufactures a line of weighted training aids for additional realism.