$780.00Original price was: $780.00.$699.98Current price is: $699.98.
🚚 Ships to your local FFL — order online, put your FFL dealer’s name and address in the Order notes box at checkout, and we coordinate the rest. Most firearms ship same or next business day. How buying a gun online works.
FREE SUPPRESSOR WITH THIS GUNBuy this firearm and get a free Outlier Backdraft Hunter 4″ suppressor, a $189 value. In stock now, while supplies last. How it works →
Diamondback Firearms DB15 300BLK 16B 30R FDE is a semi-auto AR-style rifle chambered in .300 Blk with a 16" threaded barrel. It is for shooters who want a handy .300 Blk carbine with an M-LOK rail and an integral optic mount.
Chambered in .300 Blk, semi-auto
16" 4150 chrome moly barrel, 1:8" twist
Threaded 5/8×24 with A2 flash hider
30+1 capacity, one polymer magazine included
32.75" overall length, Flat Dark Earth
M-LOK rail and integral Picatinny mount
SKU: DAV-DB1718B062 · Mfr part #: DB1718B062 · UPC: 810035756458
The Diamondback Firearms DB15 is a semi-auto rifle chambered in .300 Blk with a 16″ 4150 chrome moly barrel. It uses a direct impingement system with a pistol-length gas system. A mil-spec trigger, forward assist and dust cover round out the AR-style controls, and overall length is 32.75″.
What sets this DB15 apart
The barrel has a 1:8″ twist and is threaded 5/8×24 under an A2 flash hider, so you can change muzzle devices later. The rifle has an integral Picatinny optic mount at 0 MOA and an M-LOK rail. Furniture is a MOE grip and a MOE PR Carbine stock, all in Flat Dark Earth. The safety is manual. It has no sights, so plan on adding your own.
This rifle suits shooters who want a compact .300 Blk carbine in a familiar AR layout. It also fits anyone who wants threaded-barrel flexibility from the start. It is built around a 30+1 capacity, and one polymer AR-style magazine is included.
For gear, start with an optic for the Picatinny mount, such as a red dot or a low-power scope. The M-LOK rail takes a weapon light, bipod or sling hardware. Extra AR-style magazines are easy to add, and the 5/8×24 threads accept a compatible suppressor or other muzzle device. Backup iron sights are a sensible addition too.
Order online and we ship it to the licensed FFL dealer you choose near you — see how buying a gun online works. Western Sport has been a licensed FFL/SOT dealer since 2007, and everything we sell carries the full manufacturer warranty. Questions before you order? Send us a message.
Frequently Asked Questions
Q: What caliber is the Diamondback DB15 300BLK FDE?
A: It is chambered in .300 Blk. The action is semi-auto with a direct impingement operating system.
Q: Is the DB15 300BLK barrel threaded?
A: Yes. The 16" barrel is threaded 5/8×24 and comes with an A2 flash hider.
Q: What twist rate does this DB15 have?
A: 1:8". The barrel is 4150 chrome moly.
Q: Does this DB15 come with sights?
A: No. It has no sights, but it has an integral Picatinny optic mount at 0 MOA for adding an optic.
Q: How many rounds does the DB15 300BLK hold?
A: 30+1 rounds. One polymer AR-style magazine is included.
Warranty and Manufacturer
Covered by the Diamondback Firearms factory warranty; warranty terms come from Diamondback Firearms.
Reviews
There are no reviews yet.