Caliber: .223. Capacity: 30-round magazine. Barrel: 18”, free-floated inside M-LOK URSx handguard. Weight: 7.6 lbs. Length: 38” overall. Stock: Mag-Pul MOE. Sights: Post front, fully adjustable rear (300m sight). Features: URX-4 upper receiver; two-stage trigger, 30-round magazine. Black finish. Made in USA by Knight's Armament Co. SEE POLITICAL PANIC PRICING.