Caliber: 5.56mm NATO/.223. Capacity: 30-shot steel magazine. Barrel: 16", 1:9 twist. Weight: 6.74 lbs., w/o magazine. Lengths: 32" to 35" overall. Stock: Black synthetic. Sights: Adjustable post front sight, adjustable dual aperture rear sight. Features: 6-position telescopic stock, thermo-set M4 handguard. 14.75" sight radius. 7-lb. (approx.) trigger pull. 7075 T6 aluminum upper, 4140 steel barrel. OR (Optics Ready) model has Crimson Trace CTS-103 Red/Green Dot Electronic Sight. Hardcoat black-anodized receiver and barrel finish. Made in USA.