This is a used Ruger SR-556 AR-15 rifle chambered in 5.56 NATO. It features adjustable gas piston operating system, 16-inch barrel with a 1/9 twist, 30-round magazine, folding sights Magpul MOE SL-K stock, and Magpul grip. Overall, this Ruger is in good condition with normal use cosmetic wear on the receiver. Bore condition is good with crisp rifling. This would be a good choice for home defense. Buy online today!