Diamondback DB15 5.56 NATO AR-15 Rifle, 16 in Nitrided 4150 CMV Barrel, 1:8 Twist, 15 in M-LOK Handguard, FDE Adjustable Stock, 30+1
This Diamondback DB15 is a USA-made AR-15 pattern rifle built around 7075-T6 receivers and a 16 inch nitrided 4150 CrMoV barrel threaded 1/2x28 with an A2 flash hider. It features a 15 inch free-float M-LOK aluminum handguard, an FDE adjustable stock, and a Magpul MOE FDE pistol grip. The flat-top, T-marked upper includes a forward assist, case deflector, and an ejection-port cover marked "5.56 NATO." It is offered in very good condition with an excellent, mirror-bright bore and comes with a 30-round Magpul PMAG.
Condition
Overall Condition: Very good condition, showing only light, superficial signs of prior handling or use.
Bore Condition: Excellent - Clean, mirror finish, no signs of wear.
Bore Rifling: Excellent Rifling - Sharp lands and grooves.
Specific Condition Notes: There are some minor scratches and blemishes present on the firearm, including a blemish on the handguard.
What’s Included
- Diamondback DB15 5.56mm NATO rifle
- One 30-round Magpul PMAG polymer magazine (AR/M4 GEN M2 MOE)
The 16 inch barrel is made from 4150 CrMoV steel and finished in nitride for durability and corrosion resistance. It is threaded 1/2x28 and outfitted with an A2 flash hider. The 1:8 RH twist supports a broad range of 5.56 NATO bullet weights.
The rifle uses a direct impingement, rotating-bolt action on the AR-15 platform. Both the upper and lower receivers are 7075-T6 aluminum. The upper is flat-top and T-marked with a forward assist and case deflector, and the ejection-port cover is marked "5.56 NATO."
Furniture includes an FDE adjustable 6-position stock and a Magpul MOE FDE pistol grip. A 6-position receiver extension is installed. The manual safety provides straightforward controls familiar to AR users.
The free-float 15 inch M-LOK aluminum handguard reduces weight and allows accessory placement, and it includes a short Picatinny rail section at the front. Overall length is approximately 32.5–36 inches with an unloaded weight of about 6.6–6.7 lb.
This DB15 is marked "DIAMONDBACK FIREARMS, LLC – COCOA, FL USA" with the lower marked "DB15" and "CAL. MULTI." Capacity is 30+1, and one Magpul PMAG is included.