Included in this lot is a Ruger AR-556 16” 5.56 NATO carbine. This rifle utilizes a 16.1” barrel chambered in 5.56 NATO and .223 Rem with a 1/8 twist and standard bird cage flash suppressor. The rifle has an 11" aluminum handguard that is free-floated for accuracy and features M-LOK accessory attachment slots along the 3:00, 6:00, and 9:00 positions, with additional slots on the angled faces near the muzzle. The flat top upper receiver features a Picatinny rail for easy attachment of magnified optic, red dot, or open sights. The upper and lower receivers are made from 7075-T6 hard-coat anodized aluminum forgings. Also equipped on the rifle is a Six-position, telescoping, M4-style buttstock and Mil-Spec buffer tube, allowing the rifle to be properly sized for different shooters. Serial Number: 858-94301. This is a modern firearm and requires a FFL transfer or NICS background check.