Description
The Diamondback DBX 5.7×28 8in 30+1 Black Strike Brace is a semi-automatic pistol built for shooters who want high capacity in a compact, lightweight package. Chambered in 5.7×28 mm, this model features an 8-inch barrel, a threaded muzzle, and ships with a 30-round magazine. The forged 7075-T6 aluminum receiver and 6061 aluminum M-LOK handguard keep it tough yet light, while the Strike FSA dual folding brace makes transport and storage simple. According to Diamondback Firearms specs, this is a range-ready platform for responsible owners who value modularity and portability.
| Manufacturer | Diamondback Firearms |
|---|---|
| Model | DBX 5.7×28 |
| Material | Forged 7075-T6 aluminum receiver, 6061 aluminum handguard |
| Compatibility | 5.7×28 mm ammunition, standard 30-round magazines (included) |
| Finish | Black anodized |
| Weight | Approx. 3.2 lbs (per manufacturer specs) |
| Condition | New |
Key Features
- 8-inch threaded barrel — Gives you the option to add a suppressor or compensator for quieter shooting or reduced muzzle rise, making it easier for new shooters to stay on target.
- 30+1 round capacity — More shots between reloads means more time focusing on fundamentals and less time fumbling with magazines at the range.
- Strike FSA dual folding brace — Folds compact for storage or transport, then deploys quickly for a stable shooting platform—great for family range trips or car storage.
- M-LOK handguard — Lets you attach lights, lasers, or grips without bulky rails, keeping the pistol slim and easy to handle for smaller hands.
- Forged 7075-T6 aluminum receiver — Stronger than standard 6061, so this pistol holds up to regular use and accidental drops, giving you peace of mind as a family coach.
Who It’s For
The Diamondback DBX is perfect for families who shoot together at the range, youth shooters stepping up from rimfire, and beginners who want a lightweight pistol with high capacity. It’s also a solid choice for anyone looking for a compact, modular platform for practical carry or truck storage. If you value portability and simplicity, this one fits right in.
Pros & Cons
- Pro: Lightweight aluminum build makes it easy to carry and shoot all day without fatigue.
- Pro: 30-round magazine reduces reload frequency, keeping new shooters engaged.
- Pro: Threaded barrel opens up accessory options for customization.
- Con: The 5.7×28 can be more expensive than 9mm, so budgeting for ammo is important.
Comparison vs. Competitors
| Feature | Diamondback DBX 5.7 | Ruger-57 | PSA Rock 5.7 |
|---|---|---|---|
| Barrel Length | 8 in | 4.94 in | 4.8 in |
| Capacity | 30+1 | 20+1 | 22+1 |
| Weight | ~3.2 lbs | ~1.7 lbs | ~1.6 lbs |
| Brace Included | Yes (Strike FSA) | No | No |
| Handguard | M-LOK | None | None |
FAQ
What is the barrel length on the Diamondback DBX 5.7×28?
The barrel is 8 inches long and threaded for accessories like suppressors or compensators. This length helps with accuracy while keeping the overall package compact.
Does the Diamondback DBX come with a brace?
Yes, it ships with the Strike FSA dual folding brace, which folds for storage and deploys for a stable shooting stance. It’s included in the box.
What magazines does the DBX use?
It uses standard 30-round magazines designed for 5.7×28 mm ammunition. One magazine is included with the pistol.
Is the Diamondback DBX suitable for beginners?
Yes, its lightweight aluminum frame and high capacity make it beginner-friendly, though the 5.7×28 round has mild recoil. I recommend starting with basic safety training and ear protection.
Can I mount a light or laser on the DBX?
Yes, the M-LOK handguard lets you attach accessories like lights or lasers without extra rails, keeping the pistol slim and easy to handle.
Trust Block
- ✔ Nationwide delivery to all 50 states
- ✔ Ships within 1-2 business days
- ✔ 30-day return policy
- ✔ Secure checkout with encrypted payment
Last updated: April 2026
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