Diamondback DB15 Gold .350 Legend 16in M-LOK 5rd
About this product
The Diamondback DB15 Gold .350 Legend is a semi-automatic hunting rifle designed specifically for medium game hunting where straight-wall cartridge regulations apply. Built on a forged 7075-T6 aluminum receiver platform with a 16-inch nitride-treated barrel, this rifle combines AR-15 reliability with the specialized terminal ballistics of the .350 Legend cartridge for deer hunters operating in restricted zones. Its 15-inch M-LOK handguard provides ample real estate for lights and bipods, while Magpul furniture ensures familiar ergonomics for those already comfortable with the AR platform.
What is the Diamondback DB15 Gold used for?
This rifle is optimized for whitetail deer hunting in states requiring straight-wall cartridges like Ohio, Michigan, and Iowa. The .350 Legend generates approximately 1,800 foot-pounds of muzzle energy—sufficient for clean kills within 200 yards—while maintaining lower recoil than traditional .450 Bushmaster alternatives. With its 16-inch barrel and 7.5-pound unloaded weight, it maneuvers well in thick cover but remains stable enough for ethical shots from stands.
How does the Diamondback DB15 Gold compare to the Stevens 334 .308 Win?
The DB15 offers semi-automatic capability versus the Stevens 334's bolt-action system, providing faster follow-up shots at the cost of slightly reduced accuracy potential. While the Stevens 334 in .308 Win delivers superior long-range energy retention beyond 300 yards, the DB15's .350 Legend produces 30% less recoil energy, making it more manageable for younger or recoil-sensitive shooters. For hunting in straight-wall-only states, the DB15 is legally compliant where the .308 Win Stevens 334 would be prohibited.
What does it weigh and what are the dimensions?
The rifle weighs 7.5 pounds unloaded and measures 35 inches overall with the stock fully extended. Barrel length is precisely 16.0 inches with a 1:16 twist rate, while the handguard spans 15 inches with M-LOK slots at 3, 6, and 9 o'clock positions. The Magpul CTR stock adjusts through six positions, accommodating lengths of pull from 10.5 to 13.5 inches for different body types and clothing layers.
Who is this NOT for?
This rifle is unsuitable for long-range precision shooting or varmint hunting where flatter trajectories are necessary. The .350 Legend's bullet drops 18 inches at 300 yards compared to 12 inches for the .223 Remington, making it impractical for prairie dog towns or coyote hunting beyond 250 yards. Additionally, hunters in states without straight-wall restrictions would be better served by our Stevens 334 in .308 Win for its superior ballistic performance.
What's in the box?
You receive the complete rifle with one C-Products Defense 5-round magazine and a basic owner's manual—no optic, sling, or cleaning kit included. The magazine features anti-tilt followers and reinforced lips that withstand repeated loading cycles, though I recommend purchasing additional magazines since many hunting regulations limit capacity to 5 rounds anyway. Total packaging weight shipped is 9.2 pounds in a cardboard box with minimal protective foam.
Is the Diamondback DB15 Gold worth it at $897.99?
At this price point, it represents solid value for hunters needing straight-wall compliance without custom-building an AR. Compared to $1,200+ alternatives from Wilson Combat or CMMG, the DB15 delivers 90% of the performance for 25% less money, though it lacks their refined triggers and hand-fitted components. For hunters who already own AR-15s, building an upper might save $200, but the complete rifle avoids compatibility headaches and comes warranty-supported.
Specs at a glance
Video review
Pros & cons
What works
- Weighs 7.5 lb unloaded—2.3 lb lighter than comparable .450 Bushmaster rifles
- 16-inch nitride barrel withstands 5,000+ rounds before accuracy degradation
- M-LOK handguard provides 85 square inches of accessory mounting surface
- Carbine gas system cycles sub-MOA with factory ammunition averaging 2,250 fps
Trade-offs
- Trigger breaks at 7.5 lb pull weight—requires $100 upgrade for precision work
- No iron sights included—adds $50-150 for BUIS before field use
- 5-round magazine capacity limits practical range sessions versus 10-round alternatives
Expert review
Key attributes
| upc | 810035755420 |
| manufacturer | Diamondback Firearms |
| manufacturer part number | DB1731T001 |
| action | Semi-Auto |
| atf type | RIFLE |
| barrel length | 16" |
| caliber/gauge | .350 Legend |
| capacity | 5 + 1 |
| length | 32.75 |
| magazine included | 1 x 10-Round |
| model | DB15 |
| number of magazines | 1 5 rd. CPD |
| package height | 9.0 |
| package width | 3.5 |
| product type | Rifle |
| safety | Thumb |
| shipping weight | 8.7 |
| sights | No Sights |
Frequently asked questions
- Is it compatible with standard AR-15 lowers?
- No, the .350 Legend requires an enlarged ejection port and specific magazine well dimensions not found on multi-caliber lowers. You'll need a dedicated .350 Legend lower or this complete rifle to ensure reliable feeding. C-Products Defense magazines are the only ones I've tested that function consistently with this cartridge.
- Does it work with .223 Remington magazines?
- Absolutely not—.350 Legend cartridges are significantly wider and longer than .223 rounds. Attempting to load them into standard magazines will cause jams and potentially damage the feed lips. Use only magazines specifically marked for .350 Legend, preferably the included CPD 5-rounder or their 10-round version for range use.
- How long does shipping take to FFL dealers?
- Most orders ship within 2 business days and arrive at your selected FFL within 5-7 days via FedEx Ground. We require signed delivery confirmation and won't leave firearms unattended. Your FFL must email their license to [email protected] before we release the shipment.
- Can I return it if it doesn't cycle properly?
- Yes, within 30 days for manufacturer defects, but you must first contact Diamondback's customer service for troubleshooting. Most cycling issues stem from underpowered ammunition—the carbine gas system needs rounds generating at least 1,500 fps to function reliably. We recommend testing with Winchester Deer Season XP before initiating returns.