GoPro just released a the GoPro Sportsman Mount to easily use your GoPro Action Cams on rifles, archery bows and paintball guns, though we find it expensive... "Mount your GoPro to guns, fishing rods and bows. This versatile mount is compatible with most shotguns1, rifles, revolvers, airsoft, paintball and pellet guns, and fits bow components and fishing rod grips with a diameter of 0.4” to 0.9” (10mm to 23mm).