This pre-owned Diamondback DB15 is an AR-15 rifle chambered in 5.56 NATO with a 16 inch barrel. Diamondback builds its rifles in the U.S. with extensive in-house CNC machining, and its AR-15 line goes back to 2012. A SIG Sauer Romeo-MSR red dot comes with it, and the included magnifier adds magnification to that red dot setup.

With this rifle you get a SIG Sauer Romeo-MSR red dot and a magnifier, with no magazine and no case or bag included. Since no magazine comes with it, you will want to bring your own 5.56 NATO magazine for the range. The DB15 is Diamondback's AR-15 pattern rifle, part of a rifle catalog that also covers AR-10 and pistol-caliber carbine formats.

• Brand: Diamondback
• Model: DB15
• Caliber: 5.56 NATO
• Barrel Length: 16"
• Capacity: No magazine included
• Included Optic: SIG Sauer Romeo-MSR Red Dot
• Included Accessory: Magnifier