Diamondback Firearms DBX
- Category
- Pistol
- Barrel
- 203 mm
- Weight, empty
- 1.36 kg
- Introduced
- 2020
About
What it is, and why it matters
The Diamondback DBX is a 5.7x28mm large-format pistol built on a forged, monolithic 7075-T6 aluminum upper with a 6061 M-LOK handguard. A locked-breech dual gas-piston action tames the high-velocity 5.7 cartridge while a reversible charging handle, Magpul MOE K grip and 8 in threaded barrel with a Diamondback flash hider make it a compact, suppressor- and brace-ready platform. It feeds from 20-round magazines compatible with FN Five-seveN pattern magazines.
Founded in 2009 in Cocoa, Florida, Diamondback Firearms grew from a subcompact-pistol maker into a full-line manufacturer of AR-pattern rifles, pistols and rimfire revolvers, all produced domestically in the USA.
MSRP approx. $1,128. SKU DB1614L001. Often sold with optional SB Tactical folding brace.
Specification
Everything measured
IdentityWhat it is, who built it and when.
- Manufacturer
- Diamondback Firearms
- Category
- Pistol
- Country
- United States
- Status
- In production
- Produced
- 2020
DimensionsAs issued, without a magazine or an optic.
- Barrel
- 203 mm
- Overall length
- 387 mm
- Weight, empty
- 1.36 kg
ActionHow it cycles, what trips it, and what feeds it.
- Action
- Gas operated short stroke piston
- Firing mechanism
- Closed bolt
- Trigger
- Single stage
- Capacity
- 20
- Magazine
- Detachable box
MaterialsEach swatch is the material itself, not a colour chosen to stand for it.
- Frame
- Aluminum
- Barrel
- Stainless steel
- Finish
- Hardcoat anodized
BallisticsFrom the service cartridge, not a handload.
- Muzzle velocity
- 685 m/s
- Effective range
- 100 m
Trajectory
What the round does downrange
Solved from the muzzle figures and the bullet. The dashed rule is the effective range on the record, and the crosses are the steps the solver returned.
No load solved for this record yetThe flight path is computed from a cartridge and a bullet. This record has no ammunition filed against its chambering, so there is nothing to solve.
Features
What it has
What the record lists as fitted, drawn from the catalogue.
Accessory rail
M lok handguard
Ambidextrous charging handle
Threaded barrel
Flash hider
Ar pattern grip
Standing
How it compares
Each figure against the firearms of the same type and cartridge that record it, or of the same type where that cartridge has too few. Positions are read to the nearest tenth.
| Measurement | This firearm | Median | Position |
|---|---|---|---|
| Empty weightAmong 1,909 pistols | 1.36 kg | 794 g | Heavier than about 90% |
| Overall lengthAmong 1,911 pistols | 387 mm | 196 mm | Longer than about 90% |
| Barrel lengthAmong 1,941 pistols | 203 mm | 102 mm | Longer than about 90% |
| Magazine capacityAmong 1,962 pistols | 20 | 8 | Holds more rounds than about 90% |
Answers
Questions about the Diamondback Firearms DBX
How much does the Diamondback Firearms DBX weigh?
The Diamondback Firearms DBX weighs 1.36 kg (3.00 lb) empty.
What caliber is the Diamondback Firearms DBX?
The Diamondback Firearms DBX is chambered in 5.7x28mm FN.
How many rounds does the Diamondback Firearms DBX hold?
The Diamondback Firearms DBX holds 20 rounds, fed from a detachable box magazine.
How long is the Diamondback Firearms DBX?
The Diamondback Firearms DBX is 387 mm (15.2 in) long overall, with a 203 mm (7.99 in) barrel.
Who makes the Diamondback Firearms DBX?
The Diamondback Firearms DBX is made by Diamondback Firearms (United States).
When was the Diamondback Firearms DBX introduced?
The Diamondback Firearms DBX was introduced in 2020.
How does the Diamondback Firearms DBX operate?
The Diamondback Firearms DBX uses a gas operated short stroke piston action, and its firing mechanism is closed bolt.
Compatibility
Which parts fit this firearm
Studio
Every part that mounts on this, resolved
Not a list the maker typed out: the answer comes from the mounts this firearm exposes and the interface each part needs, so it stays right when either one changes.
- Every part that mounts on any firearm in the catalogue
- Interface standards, platforms and fit overrides
- The same answers through the API and the MCP server
Requires a signed-in GunSpec account on the Studio plan. The answer is computed per part, so it is not part of the public record.
Provenance
What the record holds
Every figure above was taken from one of these pages. The confidence reflects how much of the record came from a page a claim can be checked against.
Provenance
Confidence in this record
82%
Stockists
Where to buy
Offers link straight to the shop. GunSpec never takes the order.
No shop has listed this firearm yet
Stock and prices come from the shops themselves. If you sell this firearm, you can list it and it appears here.
List a firearmMCP
Ask an assistant about it
The same record, reached the way a person asks for it rather than the way a program does.
Ask GunSpec
Works with
Point an MCP client at GunSpec and it answers from the catalogue rather than from memory. A free key covers the read tools.
API
The call that returns this record
The same fields, in the same units, from the same endpoint the page reads.
curl --request GET \ --url 'https://api.gunspec.io/v1/firearms/diamondback-dbx' \ --header 'X-API-Key: your_key'{ "id": "diamondback-dbx", "name": "Diamondback Firearms DBX", "manufacturer": { "id": "diamondback", "name": "Diamondback Firearms", "countryCode": "US", "foundedYear": 2009, "website": "https://www.diamondbackfirearms.com", "logoUrl": null, "description": null, "status": null, "defunctYear": null, "stateOwned": null, "makesFirearms": null, "parentId": null, "predecessorId": null, "createdAt": "2026-02-18 03:40:42", "updatedAt": "2026-02-18 03:43:46", "version": "245a4d5f5ffc5204ba388fe1b03065815b2895500ff4836d15d9cb1c2935e92f" }, "category": { "id": "pistol", "name": "Pistol", "description": "Handguns designed to be fired with one or two hands" }, "country_of_origin": "US", "year_introduced": 2020, "barrel_length_mm": 203, "weight_empty_g": 1361, "action_type": "gas_operated_short_stroke_piston"}