Description
Most small-frame .357 snubbies give you five rounds and call it a day. The Diamondback SDR squeezes a sixth into a cylinder that keeps the gun right around J-frame dimensions, and it does it with an all-forged stainless steel build that comes in at just 21.2 ounces unloaded. That is lighter than some of the big-name six-shot competition, and the polished finish on this one looks sharp enough that people will ask if it is nickel plated. Chambered in .357 Magnum, it happily runs .38 Special and +P loads too, so you can practice with softer-recoiling ammo and load up hotter rounds when it counts.
What Sets the SDR Apart From Other Snub-Nose Revolvers
Diamondback did their homework on this one. The double-action pull is smooth and non-stacking in the 9 to 11.5 pound range, and cocking the exposed hammer gets you a crisp single-action break around 3.5 pounds. Instead of the usual gutter-style fixed sights you find on most snubbies, the SDR wears low-profile fiber optic sights front and rear, which makes a real difference picking up your sight picture in dim light. The push-button cylinder release sits right where your thumb wants it, the chambers are chamfered for quicker reloads, and pressing a small button lets you pull the entire cylinder and crane assembly out as one unit for easy cleaning. A full underlug shrouds the ejector rod, and the muzzle gets a 45-degree target crown to protect the rifling.
Carrying the Diamondback SDR Every Day
At 6.53 inches long, 4.44 inches tall, and 1.38 inches across the cylinder, the SDR rides comfortably inside the waistband or in a coat pocket. Rounded edges and concealed hardware keep it from snagging on the draw, and the Diamondback-branded rubber grips soak up recoil while staying compact. The grip frame also accepts standard J-frame stocks, so swapping grips down the road is simple. It ships in a zippered soft case, made right here in the USA.
Key Specifications
- Model: SDR (Self Defense Revolver)
- Manufacturer Part Number: DB0700S701
- UPC: 810035756038
- Caliber: .357 Magnum / .38 Special (+P)
- Action: Double Action / Single Action
- Capacity: 6 Rounds
- Barrel Length: 2 inches
- Overall Length: 6.53 inches
- Overall Height: 4.44 inches
- Cylinder Width: 1.38 inches
- Weight (Unloaded): 21.2 oz
- Frame Material: Forged Stainless Steel
- Finish: Polished Stainless
- Sights: Low-Profile Fiber Optic, Front and Rear
- Grips: Black Rubber with DB Logo (J-Frame Compatible)
- Twist Rate: 1:18.75
What’s Included
- Diamondback SDR revolver
- Black nylon zippered soft case
- Owner's manual
Frequently Asked Questions
Can the Diamondback SDR shoot .38 Special as well as .357 Magnum?
Yes. Like any revolver chambered in .357 Magnum, the SDR also runs .38 Special and .38 Special +P without any issues. A lot of owners practice with milder .38s to keep range sessions comfortable, then carry hotter +P or magnum loads for defense.
How does the SDR compare in size to a five-shot J-frame?
It is remarkably close. The SDR measures 6.53 inches long and 4.44 inches tall with a 1.38 inch wide cylinder, which puts it within fractions of an inch of a Smith & Wesson J-frame. The difference is you get a sixth round of .357 Magnum instead of five rounds of .38 Special, and the grip frame even accepts standard J-frame stocks.
How is the trigger on the Diamondback SDR?
The trigger is one of the strongest points of this revolver. The double-action pull is smooth and non-stacking, running between 9 and 11.5 pounds, and the single-action break is crisp at roughly 3.5 pounds. For a defensive snub nose, that is a very good trigger straight from the factory.
Is the SDR easy to clean and maintain?
Easier than most revolvers, in fact. Diamondback designed the cylinder and crane assembly to come out as a single unit with the press of a button, so you can scrub the chambers without working around the frame. Beyond that, the all-stainless construction shrugs off sweat and moisture better than blued carbon steel, which matters for a gun carried close to the body.




Reviews
There are no reviews yet.