Diamondback DB15 .300 Blackout 16″ M-LOK 30rd
About this product
The Diamondback DB15 in .300 AAC Blackout is a purpose-built AR-style rifle that balances short-range performance with accessory compatibility. It features a 16″ heavy 4150 chrome-moly barrel with a black nitride finish and a pistol-length gas system for reliable function with common .300 Blackout loads. Built on forged 7075-T6 aluminum receivers in Diamondback’s Black Gold finish, the platform includes a 15″ M-LOK handguard and Magpul furniture for practical ergonomics and modularity. The rifle ships with a 30-round Gen 3 .300 BO PMAG for extended capacity during range and training sessions.
Key Specifications
- The caliber is .300 AAC Blackout.
- The barrel measures 16″ and is described as a heavy 4150 CrMoV with a black nitride finish.
- The rifle uses a pistol-length gas system for its gas operation.
- The bolt carrier group is a shot-peened Mil-Spec 8620 carrier.
- The action type is Semi-Auto.
- The listed unloaded weight is 6.80 lbs.
- The magazine capacity is 30 + 1 and it ships with one 30-round PMAG.
- The handguard is a 15″ M-LOK (V Rail) with anti-slip texture pads.
- The muzzle device is a Diamondback CNC DBSB-IV flash hider threaded 5/8×24.
- The stock and grip are Magpul CTR stock and Magpul MOE K2 grip, respectively.
Compact, familiar, and designed to accept a wide range of accessories, the DB15 .300 Blackout suits shooters assembling a short-range precision or tactical-minded carbine. Its combination of a nitride-treated heavy barrel, M-LOK handguard and Magpul ergonomics provides a durable, adaptable platform for range work, training, and practical use in environments where a versatile, AR-style rifle is preferred.
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Specs at a glance
Key attributes
| upc | 810035754140 |
| manufacturer | Diamondback Firearms |
| manufacturer part number | DB1731B001 |
| action | Semi-Auto |
| atf type | RIFLE |
| barrel finish | Black Nitride |
| barrel length | 16" |
| caliber/gauge | .300 AAC Blackout |
| capacity | 30 + 1 |
| color | Black |
| length | 32.75 |
| 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 |
| safety | Manual Thumb |
| shipping weight | 8.45 |
| sights | No Sights |
| thread pattern | 5/8"-24 tpi |
| units per box | 1 |