Rock Island Single Shot 20 Gauge 24" Barrel 1 Realtree Timber BRTS2420 Rock Island Single Shot The Rock Island Single Shot is a break-open action shotgun chambered in 20 Gauge, designed for simplicity and reliability in hunting and shooting activities. It features a 24-inch chrome-lined steel barrel, a 1-round capacity, and a Realtree Timber synthetic stock for durable performance in the field. With a black anodized finish on the barrel and receiver, this shotgun combines functionality with a camouflage aesthetic suitable for outdoor environments.