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.
Firearm Shipments:
To buy rifles or shotguns, you must be 18 years old, and for handguns, actions, or receivers, the minimum age is 21. By placing an order for this firearm, you confirm that you are the legitimate transferee/buyer, meet the legal age requirements, and comply with all Federal, State, and local laws and regulations necessary to purchase this firearm.
We only ship firearms to valid Federal Firearms License (FFL) holders. At checkout we provide a FFL locator for your convenience.
We will need a copy of the FFL’s license to facilitate the process, kindly request your dealer to email us a copy of their FFL, as we cannot dispatch the firearm until we receive this document. It is imperative for the buyer to choose their FFL dealer, ensure they are willing to facilitate the transfer, and have them email their FFL copy to BOSQUE Outdoors. To avoid any confusion, the customer's name or order number must be mentioned in the email containing the FFL.
Email: [email protected]
Diamondback
Diamondback
Diamondback
Diamondback
