Action: Semi Auto - Caliber: 5.56X45mm /.223 - Capacity: 30 - Finish: Black Hard Anodized - Material: Aluminum/Steel - Stock: 6-Position Collapsible - Upper: Forged Flat-Top w/MIL-STD 1913 Rail - Twist: 1:7 - Barrel Length: 16 - Overall Length: 32 - 35.3 - Weight: 6.1 lb - The DSR15 is a light and versatile version of the DSR15F. It weighs in at 6.1 lbs. has a forged flat-top receiver with MIL-STD 1913 rail and features a gas block with a MIL-STD 1913 rail to easily accessorize to meet any shooter's needs.