Here is another VR rifle that lets you get more out of your shooting games. The M4 Rifle for HTC Vive Controller has an ABS body, weighing 1.7lb. It comes with an adjustable buttstock and magnets for front Vive controller. You can use this controller with a variety of games, including Pavlov VR, Onward, Overkill, ZomDay, and Arizona Sunshine.
This rifle is available for under $260 at this time. More info is available here.