Gun Collectors Dream Auction #83 May 2nd & 3rd TWO DAYS - NO RESERVES - 1200 LOTS!

Diamondback Firearms DB15 Semi-Automatic Rifle .300 Blackout with 16 Inch Barrel

This auction ended on May 2, 2026.

Start price: $10

Estimated price: $400 - $600

Buyer's Premium: 12%

Sold for: $475

Description

This Diamondback Firearms DB15 is a semi-automatic rifle chambered in .300 Blackout, featuring a contemporary two-tone aesthetic with Flat Dark Earth and black components. The rifle is equipped with a 16-inch black barrel with a 1/8 twist rate and an A2-style flash hider, paired with a 12-inch M-LOK handguard finished in Flat Dark Earth. The upper and lower receivers also feature a Flat Dark Earth finish, complemented by black polymer furniture including a Magpul-style collapsible buttstock and a textured pistol grip. A full-length Picatinny rail is integrated into the top of the receiver and handguard for the mounting of optics and accessories. Verbatim markings on the left side of the lower receiver include the Diamondback shield logo, CAL. MULTI, DB15, and the serial number DB2203483. The right side of the receiver is marked DIAMONDBACK FIREARMS LLC / COCOA, FL USA along with FIRE and SAFE selector indicators. The barrel is stamped 300 BLACKOUT 1/8 near the muzzle, and the dust cover is marked 300 AAC. This lot includes the original factory box, owner’s manual, a green chamber safety flag, a cable lock, and a logo sticker; no magazine is included with this firearm. Note – All firearms require a federal 4473 background check.


Condition report:

The rifle appears to be in excellent, like-new condition. The Flat Dark Earth finish on the receivers and handguard is uniform and free of significant wear, while the black finish on the barrel and furniture is similarly well-preserved. The bore is bright with sharp, distinct rifling. The action appears to function correctly, though we have not function-tested this firearm. The polymer stock and grip show no signs of use or impact damage.