Diamondback Firearms SDR
- Category
- Revolver
- Barrel
- 51 mm
- Weight, empty
- 601 g
- Introduced
- 2024
About
What it is, and why it matters
The Diamondback SDR (Self Defense Revolver) is a 6-shot, .357 Magnum snub-nose revolver introduced in 2024, also rated for .38 Special +P (with a 9mm +P chambering offered). It is built on a forged stainless-steel frame with a matching stainless barrel and cylinder, a smooth non-stacking trigger, a fully captured cylinder/crane assembly, a push-button cylinder release and low-profile fiber-optic sights front and rear. A 45-degree target-crown muzzle and concealed hardware round out a modern take on the carry six-shooter; 2 in and 3 in barrels are offered.
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. $614-$832 depending on finish. SKU DB0700 series. Offered in polished stainless, glass bead and black nitride finishes, in 2 in and 3 in barrels. DA pull approx. 9.9 lb, SA approx. 2.3 lb.
Specification
Everything measured
IdentityWhat it is, who built it and when.
- Manufacturer
- Diamondback Firearms
- Category
- Revolver
- Country
- United States
- Status
- In production
- Produced
- 2024
DimensionsAs issued, without a magazine or an optic.
- Barrel
- 51 mm
- Overall length
- 166 mm
- Height
- 113 mm
- Weight, empty
- 601 g
ActionHow it cycles, what trips it, and what feeds it.
- Action
- Double action
- Firing mechanism
- Hammer fired
- Trigger
- Double action single action
- Trigger pull
- 44.0 N
- Capacity
- 6
- Magazine
- Revolving cylinder
MaterialsEach swatch is the material itself, not a colour chosen to stand for it.
- Frame
- Stainless steel
- Barrel
- Stainless steel
- Stock
- Polymer
- Finish
- Stainless
BallisticsFrom the service cartridge, not a handload.
- Effective range
- 25 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.
Features
What it has
What the record lists as fitted, drawn from the catalogue.
Fiber optic sights
Push button cylinder release
Concealed hammer
Target crown
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 53 .357 Magnum revolvers | 601 g | 1.10 kg | Lighter than about 90% |
| Overall lengthAmong 50 .357 Magnum revolvers | 166 mm | 245 mm | Among the shortest tenth |
| Barrel lengthAmong 53 .357 Magnum revolvers | 51 mm | 107 mm | Among the shortest tenth |
| Magazine capacityAmong 53 .357 Magnum revolvers | 6 | 6 | Near the median |
Its place in the rankings
Answers
Questions about the Diamondback Firearms SDR
How much does the Diamondback Firearms SDR weigh?
The Diamondback Firearms SDR weighs 601 g (1.32 lb) empty. It is the 2nd lightest of 53 .357 Magnum revolvers in the catalogue.
What caliber is the Diamondback Firearms SDR?
The Diamondback Firearms SDR is chambered in .357 Magnum and .38 Special.
How many rounds does the Diamondback Firearms SDR hold?
The Diamondback Firearms SDR holds 6 rounds, fed from a revolving cylinder.
How long is the Diamondback Firearms SDR?
The Diamondback Firearms SDR is 166 mm (6.54 in) long overall, with a 51 mm (2.01 in) barrel.
Who makes the Diamondback Firearms SDR?
The Diamondback Firearms SDR is made by Diamondback Firearms (United States).
When was the Diamondback Firearms SDR introduced?
The Diamondback Firearms SDR was introduced in 2024.
How does the Diamondback Firearms SDR operate?
The Diamondback Firearms SDR uses a double action, and its firing mechanism is hammer fired.
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
78%
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-sdr' \ --header 'X-API-Key: your_key'{ "id": "diamondback-sdr", "name": "Diamondback Firearms SDR", "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": "revolver", "name": "Revolver", "description": "Handguns with a revolving cylinder containing multiple chambers" }, "country_of_origin": "US", "year_introduced": 2024, "barrel_length_mm": 51, "weight_empty_g": 601, "action_type": "double_action"}