Diamondback DB15 Obsidian 5.56 16″ 30rd
$968.00
DBF DB15 OBSI 556 RFL 16B 30R
The Diamondback Obsidian variant pairs a 16-inch barrel with specialized custom finishes, enhanced ergonomic furniture, and a free-float M-LOK handguard for elite performance and aesthetics.
DBF DB15 OBSI 556 RFL 16B 30R
The Diamondback Obsidian Series is a fusion of precision engineering and tactical versatility. The mid-length gas system, paired with a pinned gas block, enhances reliability and reduces recoil, providing a smoother shooting experience. Outfitted with premium Magpul furniture, including the ACS-L stock and MOE-K2+ grip, the DB15 Obsidian offers superior ergonomics and control for both dynamic and precision shooting.
Weighing approximately 6.6 pounds and constructed with forged 7075-T6 aluminum receivers, this rifle balances durability with a lightweight profile. Whether you’re a seasoned shooter or new to the AR platform, the DB15 Obsidian Series stands ready to exceed expectations in performance and reliability.

Finish: Black Hardcoat Anodize
Caliber: 5.56 NATO
Barrel: 16 in, 1:8 RH, Medium, 4150 CrMoV, Black Nitride
Gas System: Mid-Length
BCG: Shot-Peened, Magnetic Particle Inspected Mil-Spec 8620 Carrier
Upper: A3 Flattop Forged 7075 T-6 Aluminum
Lower: Forged 7075 T-6 Aluminum w/ Magpul MOE Enhanced Trigger Guard
Charging Handle: Breek Arms Warhammer MOD 2 Ambi
Bolt Catch: Battle Arms Enhanced Bolt Catch
Handguard: 15 in M-LOK Anti-Rotation V4 S-Rail w/ Full Picatinny and QD Mounts
Safety: Battle Arms Ambi Safety Selector
Grip: Magpul MOE K2 Grip
Stock | Brace: Magpul CTR Stock
Magazine: Magpul Gen M3 PMAG, 30 Round
Magazine Catch: Battle Arms Ambi Magazine Catch
Sights: None
Muzzle Device: DB Obsidian Muzzle Brake (1/2 x 28)
Trigger: Standard Mil-Spec
Weight: 6.60 lbs
Length (Collapsed / Extended): 33 in / 36.25 in
Caliber: 5.56 NATO
Barrel: 16 in, 1:8 RH, Medium, 4150 CrMoV, Black Nitride
Gas System: Mid-Length
BCG: Shot-Peened, Magnetic Particle Inspected Mil-Spec 8620 Carrier
Upper: A3 Flattop Forged 7075 T-6 Aluminum
Lower: Forged 7075 T-6 Aluminum w/ Magpul MOE Enhanced Trigger Guard
Charging Handle: Breek Arms Warhammer MOD 2 Ambi
Bolt Catch: Battle Arms Enhanced Bolt Catch
Handguard: 15 in M-LOK Anti-Rotation V4 S-Rail w/ Full Picatinny and QD Mounts
Safety: Battle Arms Ambi Safety Selector
Grip: Magpul MOE K2 Grip
Stock | Brace: Magpul CTR Stock
Magazine: Magpul Gen M3 PMAG, 30 Round
Magazine Catch: Battle Arms Ambi Magazine Catch
Sights: None
Muzzle Device: DB Obsidian Muzzle Brake (1/2 x 28)
Trigger: Standard Mil-Spec
Weight: 6.60 lbs
Length (Collapsed / Extended): 33 in / 36.25 in

Specifications
- Manufacturer: Diamondback Firearms
- Model: DB15
- Action: Semi-Auto
- Caliber/Gauge: .223 REM/5.56 NATO
- Barrel Length: 16″
- Capacity: 30 + 1
- Magazines Included: 1 x 30-Round
- Finish: Black
- Sights: No Sights
- Safety: Ambidextrous
- Twist Rate: 1-in-8
- UPC: 810035756007
- Manufacturer Part Number: DB1784K001
| Attributes | Value |
|---|---|
| UPC |
810035756007 |
| Manufacturer |
Diamondback Firearms |
| Manufacturer Part Number |
DB1784K001 |
| Action |
Semi-Auto |
| ATF Type |
Rifle |
| Barrel Length |
16" |
| Caliber/Gauge |
.223 REM/5.56 NATO |
| Capacity |
30 + 1 |
| Color |
Black |
| Length |
34 |
| Magazine Included |
1 x 30-Round |
| Model |
DB15 |
| Number of Magazines |
1 30 rd. PMAG |
| Package Height |
9.0 |
| Package Width |
3.5 |
| Product Type |
Rifle |
| Rate of Twist |
1-in-8 |
| Safety |
Ambidextrous |
| Shipping Weight |
8.25 |
| Sights |
No Sights |

