Action: Semi Auto – Caliber: 7.62X51mm / .308 – Capacity: 20 – Finish: Black Hard Anodized / Manganese Phosphated – Material: Aluminum/Steel – Stock: 6-Position Collapsible – Upper: Forged Flat-Top w/MIL-STD 1913 Rail – Twist: 1:11.25 – Barrel Length: 16 – Overall Length: 35 – 38.3 – Weight: 7.9 lb – Legendary Armalite quality in a streamlined platform. The Defensive Sporting Rifle is a high quality no frills rifle well suited for duty sport or defense. The DSR10 uses a double lapped chrome lined/chrome moly barrel for extreme durability and accuracy and comes with a 20-round Magpul PMAG.