Ruger AR-556 with Free Float Handguard 5.56x45mm NATO 16.1" 10 Round Black Hard Coat Collapsable Stock Anodized Rifle - $599.99 Ruger's AR-556 semi-automatic rifle is made from forged aerospace-grade 7075-T6 aluminum. The hard coat anodized, flattop upper receiver includes a forward assist, dust