This is a preowned BIRD DOG ARMS - 5.56 NATO rifle in VERY GOOD condition. Comes as pictured with minor cosmetic wear with one magazine. Features & Benefits * Semi-automatic AR-15 platform * Chambered for 5.56 NATO (typically also compatible with .223 Remington ammunition) * Direct impingement gas operating system * Detachable STANAG-pattern magazine * Flat-top upper receiver with Picatinny rail for optics * Free-float M-LOK handguard on many models * Adjustable 6-position collapsible stock * A2-style flash hider * Compatible with many standard AR-15 aftermarket parts and accessories Specifications * Caliber: 5.56x45mm NATO * Action: Semi-automatic * Barrel length: 16 inches * Twist rate: 1:7 * Overall length: Approximately 32-35.5 inches (stock collapsed/extended) * Weight: About 6.5-7.0 lb (model dependent) * Magazine capacity: 45 rounds * Receiver: Forged aluminum * Handguard: M-LOK free-float * Stock: Adjustable collapsible * Finish: Black anodized I#0947169 - BMM - EN