Diamondback Firearms DB15 5.56x45mm 16" AR Rifle - Black (Model: DB1731K071)Diamondback$931.25
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Diamondback
The Diamondback Firearms DB15 5.56x45mm 16" AR rifle delivers American-made reliability at a price that won't empty your wallet. Built entirely in the USA using Diamondback's own CNC machining, this mid-length gas system rifle starts with the proven military gas-impingement platform and layers on quality components that punch above its weight class. Whether you're building a reliable range gun, a practical hunting rifle, or a solid defensive carbine, the DB15 gives you a versatile AR platform that works with standard AR15 accessories and doesn't sacrifice performance for affordability.
The heart of the DB15 is a 16-inch 4150 CrMov barrel with a 1:8 right-hand twist, finished in black nitride for durability. The upper is a forged 7075 T-6 aluminum A3 flattop with military-spec markings, paired with a matching forged aluminum lower receiver featuring Diamondback's Black Gold finish and an enhanced trigger guard. The mid-length gas tube keeps the action running smooth and reduces felt recoil compared to carbine-length systems—a genuine advantage for follow-up shots and all-day shooting comfort.
Ergonomics and modularity come standard. The rifle ships with a Magpul CTR stock (adjustable from 32¾" to 36" overall length), a MOE-K2 grip, and a Diamondback 15 M-LOK handguard with anti-slip texture pads for confident handling in wet or cold conditions. The muzzle is topped with a Diamondback CNC DBSB IV flash hider (1/2×28 threads) to reduce visible signature and keep your focus downrange. You'll also get a Gen 2 Pmag 30-rounder in the box—a standard that works across the entire AR platform ecosystem. The bolt carrier group is shot-peened and magnetic particle inspected to military specifications, built on MIL spec 8620 steel with the Diamondback logo laser-marked for authenticity.
At 6.8 pounds, the DB15 balances shootability with portability. This is a no-nonsense rifle for hunters, competition shooters, and anyone who values American manufacturing and straightforward performance over marketing hype.
| Caliber | 5.56x45mm NATO |
| Barrel Length | 16 inches |
| Barrel Material | 4150 CrMov, black nitride finish |
| Barrel Twist | 1:8, right-hand |
| Gas System | Mid-length |
| Upper Receiver | Forged 7075 T-6 aluminum, A3 flattop with T-markings |
| Lower Receiver | Forged 7075 T-6 aluminum, Black Gold finish, enhanced trigger guard |
| Handguard | Diamondback 15 M-LOK with anti-slip texture pads |
| Grip | Magpul MOE-K2 |
| Stock | Magpul CTR, adjustable |
| Bolt Carrier Group | MIL spec 8620 steel, shot-peened, magnetic particle inspected |
| Muzzle Device | Diamondback CNC DBSB IV flash hider (1/2×28 threads) |
| Trigger | Standard |
| Weight | 6.8 pounds |
| Length (stock collapsed) | 32¾ inches |
| Length (stock extended) | 36 inches |
| Included Magazine | Gen 2 Pmag 30-round |
| Country of Origin | USA |
The DB15 is fully compatible with standard AR15 accessories. The M-LOK handguard accepts any M-LOK-compatible rails, lights, and grips. The muzzle device uses standard 1/2×28 threads, so you can swap in suppressors, brakes, or other muzzle accessories. The Magpul stock and grip can be easily replaced with other AR15-standard components if you want to customize fit or function.
Yes. The 5.56 NATO cartridge is effective for medium-sized game and varmint hunting when using appropriate ammunition. The 16-inch barrel with mid-length gas system provides a compact, maneuverable platform for hunting, and the adjustable stock lets you dial in a comfortable length of pull for different clothing or shooting positions.
Your DB15 ships with a Gen 2 Pmag 30-round magazine. The rifle is fully assembled and ready to shoot—you'll just need to add ammunition and optics of your choice.
The mid-length gas tube is longer than a carbine-length system, which means the bolt carrier cycles with less force and speed. This results in softer recoil impulse, reduced wear on components, and easier control for faster follow-up shots—benefits you'll notice especially during extended range sessions or competition shooting.
Diamondback
The Diamondback Firearms DB15 5.56x45mm 16" AR rifle delivers American-made reliability at a price that won't empty your wallet. Built entirely in the USA using Diamondback's own CNC machining, this mid-length gas system rifle starts with the proven military gas-impingement platform and layers on quality components that punch above its weight class. Whether you're building a reliable range gun, a practical hunting rifle, or a solid defensive carbine, the DB15 gives you a versatile AR platform that works with standard AR15 accessories and doesn't sacrifice performance for affordability.
The heart of the DB15 is a 16-inch 4150 CrMov barrel with a 1:8 right-hand twist, finished in black nitride for durability. The upper is a forged 7075 T-6 aluminum A3 flattop with military-spec markings, paired with a matching forged aluminum lower receiver featuring Diamondback's Black Gold finish and an enhanced trigger guard. The mid-length gas tube keeps the action running smooth and reduces felt recoil compared to carbine-length systems—a genuine advantage for follow-up shots and all-day shooting comfort.
Ergonomics and modularity come standard. The rifle ships with a Magpul CTR stock (adjustable from 32¾" to 36" overall length), a MOE-K2 grip, and a Diamondback 15 M-LOK handguard with anti-slip texture pads for confident handling in wet or cold conditions. The muzzle is topped with a Diamondback CNC DBSB IV flash hider (1/2×28 threads) to reduce visible signature and keep your focus downrange. You'll also get a Gen 2 Pmag 30-rounder in the box—a standard that works across the entire AR platform ecosystem. The bolt carrier group is shot-peened and magnetic particle inspected to military specifications, built on MIL spec 8620 steel with the Diamondback logo laser-marked for authenticity.
At 6.8 pounds, the DB15 balances shootability with portability. This is a no-nonsense rifle for hunters, competition shooters, and anyone who values American manufacturing and straightforward performance over marketing hype.
| Caliber | 5.56x45mm NATO |
| Barrel Length | 16 inches |
| Barrel Material | 4150 CrMov, black nitride finish |
| Barrel Twist | 1:8, right-hand |
| Gas System | Mid-length |
| Upper Receiver | Forged 7075 T-6 aluminum, A3 flattop with T-markings |
| Lower Receiver | Forged 7075 T-6 aluminum, Black Gold finish, enhanced trigger guard |
| Handguard | Diamondback 15 M-LOK with anti-slip texture pads |
| Grip | Magpul MOE-K2 |
| Stock | Magpul CTR, adjustable |
| Bolt Carrier Group | MIL spec 8620 steel, shot-peened, magnetic particle inspected |
| Muzzle Device | Diamondback CNC DBSB IV flash hider (1/2×28 threads) |
| Trigger | Standard |
| Weight | 6.8 pounds |
| Length (stock collapsed) | 32¾ inches |
| Length (stock extended) | 36 inches |
| Included Magazine | Gen 2 Pmag 30-round |
| Country of Origin | USA |
The DB15 is fully compatible with standard AR15 accessories. The M-LOK handguard accepts any M-LOK-compatible rails, lights, and grips. The muzzle device uses standard 1/2×28 threads, so you can swap in suppressors, brakes, or other muzzle accessories. The Magpul stock and grip can be easily replaced with other AR15-standard components if you want to customize fit or function.
Yes. The 5.56 NATO cartridge is effective for medium-sized game and varmint hunting when using appropriate ammunition. The 16-inch barrel with mid-length gas system provides a compact, maneuverable platform for hunting, and the adjustable stock lets you dial in a comfortable length of pull for different clothing or shooting positions.
Your DB15 ships with a Gen 2 Pmag 30-round magazine. The rifle is fully assembled and ready to shoot—you'll just need to add ammunition and optics of your choice.
The mid-length gas tube is longer than a carbine-length system, which means the bolt carrier cycles with less force and speed. This results in softer recoil impulse, reduced wear on components, and easier control for faster follow-up shots—benefits you'll notice especially during extended range sessions or competition shooting.
