Diamondback120918636
Diamondback Firearms DB15 5.56x45mm 16" AR Rifle - Black (Model: DB1731K071)$931.25
Availability: In Stock
Current Stock: Out of stock
The Diamondback Firearms DB15 5.56x45mm AR-15 rifle is a purpose-built platform for shooters who want a reliable, no-nonsense carbine without the frills or the premium price tag. This 16-inch rifle strikes a practical balance between maneuverability and velocity, making it equally at home on the range, in a defensive role, or as a hunting carbine for varmint and medium game. The DB15 arrives configured and ready to shoot, with quality components throughout that reflect Diamondback's reputation for honest engineering.
The heart of this rifle is a Diamondback 5.56 barrel with a 1:8 right-hand twist, set up in a mid-length gas system for smooth cycling and manageable recoil. The upper receiver is a forged 7075 T-6 aluminum A3 flattop—the flat-top design gives you mounting flexibility for optics and accessories. The lower is also 7075 T-6 forged aluminum with Diamondback's Diamond branding, paired with an enhanced skeletonized trigger guard for a modern aesthetic and reduced weight. A CMC 3.5-pound single-stage trigger breaks cleanly, supporting precision shooting without the stiffness of a heavy mil-spec trigger.
The 15-inch M-LOK handguard uses Diamondback's S-Rail anti-rotation design, so your accessories stay put. You get a Magpul MOE K2+ grip for control and a Magpul ACS-L stock that collapses to 34 inches for tight spaces or vehicle storage, then extends to 37.25 inches for a full cheek weld. The rifle ships with a Diamondback CNC muzzle brake (1/2 x 28 threaded) and a 30-round Gen 2 PMAG. Total weight is 6.95 pounds—light enough to carry all day, substantial enough to shoot predictably.
This is a rifle for people who shoot rather than collect—no iron sights, no rail covers, no surplus features. Add your own optic and you've got a versatile 5.56 platform that delivers honest value and proven reliability.
| Caliber | 5.56 NATO |
| Barrel Length | 16 inches |
| Barrel Twist | 1:8 RH |
| Gas System | Mid-length |
| Upper Receiver | Forged 7075 T-6 aluminum, A3 flattop |
| Lower Receiver | Forged 7075 T-6 aluminum (Diamondback Diamond Lower) |
| Handguard | 15-inch M-LOK, anti-rotation S-Rail |
| Trigger | CMC 3.5 lb single-stage drop-in |
| Stock | Magpul ACS-L, collapsible |
| Grip | Magpul MOE K2+ |
| Muzzle Device | Diamondback CNC muzzle brake, 1/2 x 28 thread |
| Bolt Carrier Group | Mil-spec 8620, shot-peened, magnetic particle inspected |
| Magazine | One 30-round Gen 2 PMAG included |
| Weight | 6.95 lb |
| Length (Collapsed) | 34 inches |
| Length (Extended) | 37.25 inches |
| Finish | Black |
| Model | DB1758K001 |
The 16-inch barrel on the DB15 is the most versatile AR carbine length—it's the legal minimum in most US states, and it offers a good compromise between velocity, handling, and accuracy. A 1:8 twist rate handles a wide range of 5.56 ammunition loads, from lighter practice rounds to heavier bullets for hunting or distance work.
No, this rifle ships without integrated iron sights. The A3 flattop receiver is designed for optic mounting—you can add your own scope, red dot, or backup irons depending on your mission.
The M-LOK handguard accepts any standard M-LOK accessories. The flattop upper receiver supports any Picatinny rail-mounted optic. The buffer tube is a standard Magpul ACS-L, so aftermarket stocks are compatible. The muzzle brake is 1/2 x 28 threaded, matching most common suppressors and muzzle devices.
Yes. The 5.56 NATO cartridge is effective for varmint and predator hunting, as well as medium-sized game in many states—check your local regulations. The 16-inch mid-length platform provides adequate velocity, and the clean 3.5-pound trigger supports accurate shot placement.
SKU: 120919624 • Width: 10.2in • Height: 4in • Depth: 47.2in • Weight: 13.2oz
Availability: In Stock
Current Stock: Out of stock
The Diamondback Firearms DB15 5.56x45mm AR-15 rifle is a purpose-built platform for shooters who want a reliable, no-nonsense carbine without the frills or the premium price tag. This 16-inch rifle strikes a practical balance between maneuverability and velocity, making it equally at home on the range, in a defensive role, or as a hunting carbine for varmint and medium game. The DB15 arrives configured and ready to shoot, with quality components throughout that reflect Diamondback's reputation for honest engineering.
The heart of this rifle is a Diamondback 5.56 barrel with a 1:8 right-hand twist, set up in a mid-length gas system for smooth cycling and manageable recoil. The upper receiver is a forged 7075 T-6 aluminum A3 flattop—the flat-top design gives you mounting flexibility for optics and accessories. The lower is also 7075 T-6 forged aluminum with Diamondback's Diamond branding, paired with an enhanced skeletonized trigger guard for a modern aesthetic and reduced weight. A CMC 3.5-pound single-stage trigger breaks cleanly, supporting precision shooting without the stiffness of a heavy mil-spec trigger.
The 15-inch M-LOK handguard uses Diamondback's S-Rail anti-rotation design, so your accessories stay put. You get a Magpul MOE K2+ grip for control and a Magpul ACS-L stock that collapses to 34 inches for tight spaces or vehicle storage, then extends to 37.25 inches for a full cheek weld. The rifle ships with a Diamondback CNC muzzle brake (1/2 x 28 threaded) and a 30-round Gen 2 PMAG. Total weight is 6.95 pounds—light enough to carry all day, substantial enough to shoot predictably.
This is a rifle for people who shoot rather than collect—no iron sights, no rail covers, no surplus features. Add your own optic and you've got a versatile 5.56 platform that delivers honest value and proven reliability.
| Caliber | 5.56 NATO |
| Barrel Length | 16 inches |
| Barrel Twist | 1:8 RH |
| Gas System | Mid-length |
| Upper Receiver | Forged 7075 T-6 aluminum, A3 flattop |
| Lower Receiver | Forged 7075 T-6 aluminum (Diamondback Diamond Lower) |
| Handguard | 15-inch M-LOK, anti-rotation S-Rail |
| Trigger | CMC 3.5 lb single-stage drop-in |
| Stock | Magpul ACS-L, collapsible |
| Grip | Magpul MOE K2+ |
| Muzzle Device | Diamondback CNC muzzle brake, 1/2 x 28 thread |
| Bolt Carrier Group | Mil-spec 8620, shot-peened, magnetic particle inspected |
| Magazine | One 30-round Gen 2 PMAG included |
| Weight | 6.95 lb |
| Length (Collapsed) | 34 inches |
| Length (Extended) | 37.25 inches |
| Finish | Black |
| Model | DB1758K001 |
The 16-inch barrel on the DB15 is the most versatile AR carbine length—it's the legal minimum in most US states, and it offers a good compromise between velocity, handling, and accuracy. A 1:8 twist rate handles a wide range of 5.56 ammunition loads, from lighter practice rounds to heavier bullets for hunting or distance work.
No, this rifle ships without integrated iron sights. The A3 flattop receiver is designed for optic mounting—you can add your own scope, red dot, or backup irons depending on your mission.
The M-LOK handguard accepts any standard M-LOK accessories. The flattop upper receiver supports any Picatinny rail-mounted optic. The buffer tube is a standard Magpul ACS-L, so aftermarket stocks are compatible. The muzzle brake is 1/2 x 28 threaded, matching most common suppressors and muzzle devices.
Yes. The 5.56 NATO cartridge is effective for varmint and predator hunting, as well as medium-sized game in many states—check your local regulations. The 16-inch mid-length platform provides adequate velocity, and the clean 3.5-pound trigger supports accurate shot placement.
SKU: 120919624 • Width: 10.2in • Height: 4in • Depth: 47.2in • Weight: 13.2oz