Diamondback Firearms Db15o 5.56mm Odg 16" M-lok
Diamondback Firearms
$1,085.69
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Diamondback Firearms
Diamondback Firearms Db15o 5.56mm Odg 16" M-lok
The Diamondback Firearms DB15O in 5.56mm NATO is a battle-tested, feature-packed AR-15 platform finished in a striking OD Green Cerakote — built for reliability, precision, and a commanding presence at the range or in the field.
- Chambered in 5.56 NATO / .223 Rem for versatile, widely available ammunition
- 16" barrel delivers optimal velocity and accuracy for mid-range shooting
- OD Green Cerakote finish provides corrosion resistance and tactical aesthetics
- Forged 7075 T-6 aluminum receiver ensures a lightweight yet durable build
- M-LOK handguard allows easy attachment of lights, grips, and accessories
- Includes Magpul CTR collapsible stock and one 30-round PMAG magazine
Who This Is For
The DB15O is an excellent choice for AR-15 enthusiasts, home defenders, and recreational shooters who want a well-equipped, out-of-the-box rifle without sacrificing quality. Whether you're a first-time AR buyer looking for a reliable starter platform or a seasoned shooter seeking a durable range workhorse with M-LOK modularity, the DB15O delivers serious performance at a competitive price point.
Specifications
| Model | DB15O |
|---|---|
| Caliber | .223 Rem / 5.56 NATO |
| Barrel Length | 16" |
| Capacity | 30+1 |
| Finish | OD Green Cerakote |
| Receiver Material | Forged 7075 T-6 Aluminum |
| Handguard | M-LOK Compatible |
| Stock | Magpul CTR Collapsible |
| Sights | None Included |
| Magazine | 1x 30-Round Magpul PMAG |
| Action | Semi-Automatic |
| Brand | Diamondback Firearms |
Frequently Asked Questions
Can I use both .223 Remington and 5.56 NATO ammunition in the DB15O?
Yes. The Diamondback DB15O is chambered for 5.56 NATO, which means it safely accepts both 5.56 NATO and .223 Remington ammunition. This gives you maximum flexibility when shopping for affordable or surplus ammo. Note that a rifle chambered only in .223 Rem should not fire 5.56 NATO — but the reverse is perfectly safe with the DB15O.
Does the DB15O come with iron sights or optics?
No — the DB15O ships without iron sights or optics. The flattop Picatinny rail on the upper receiver makes it straightforward to mount your preferred red dot, holographic sight, or magnified optic. If you want iron sights, standard A2-style or folding backup iron sights (BUIS) are compatible and easy to add.
What accessories can I add to the M-LOK handguard?
The M-LOK handguard system is one of the most popular and widely supported modular attachment platforms available. You can easily attach tactical flashlights, foregrips, angled grips, pressure switches, sling mounts, and rail sections for legacy Picatinny accessories. M-LOK hardware is widely available from brands like Magpul, Arisaka, and Midwest Industries, making it simple to customize the DB15O to your exact preferences.
