KNS Precision manufacture a number of AR-15 accessories including a rifle machine gun-like spade grip, a tripod mount and a GoPro video camera mount. At SHOT Show they had all three hooked up to a short barreled AR-15. The end result looked awesome and must be a lot of fun to play with. The GoPro camera could be used to capture plinking sessions at the range or be used by law enforcement or private military contractors to document live engagements or training sessions.