New For 2024: Diamondback Self-Defense Revolver (SDR)

posted on May 18, 2024
Diamondback SDR 01A
Images courtesy of Diamondback Firearms.

While most known for its AR-15 and AR-10 pattern firearms, Florida manufacturer Diamondback Firearms got its start in 2009 with handguns with the DB380. New for 2024, the company has another unique addition to its line-up of personal protection handguns with the Self-Defense Revolver (SDR).

Right side of the Diamondback Self-Defense RevolverThe SDR is a compact revolver that holds six rounds of .357 Magnum.

The SDR is a compact double-action revolver with a swing-out cylinder chambered in .357 Magnum. Despite its compact size, the SDR has a capacity of six rounds, with its chambers chamfered for quicker loading. Opening the action is accomplished with a push-button cylinder release that operates much like the magazine release on a semi-automatic handgun. The cylinder and crane assembly is captured and can be removed from the frame by pushing a release button. Its action is double-action/single-action, with an exposed hammer for cocking in single-action mode. Diamondback calls the trigger “match grade,” and it is engineered for a smooth non-stacking pull and clean break.   

A push-button cylinder release shown on the left side of the Diamondback SDR revolver.The SDR’s cylinder release is a push button.

A highlighted push-button release on the front of the trigger guard for the Diamondback SDR's cylinder crane.The cylinder and crane assembly of the SDR can be removed after pushing a release button.

Major components of the SDR are made of stainless steel, including the barrel, cylinder and forged frame, which are given a high-polished finish. The 2” barrel has a full underlug that shrouds the ejector rod, and its muzzle is given a 45-degree target crown. With an overall length of 6.53”, height of 4.44” and a cylinder width of 1.38”, the SDR weighs 21.2 ozs. The entire package is contoured and streamlined to save weight and optimize the shape for concealed carry. 

A front view of the Diamondback SDR revolver.The muzzle of the SDR has a target crown.

While compact revolvers are not known for having good sighting systems, the SDR use a front post with an orange fiber-optic insert that is pinned in place and a rear notch with two contrasting green fiber-optic inserts fitted into a dovetail in the frame’s top strap. Grips are of a “boot” profile and made of rubber with a pebble grain texture and are compatible with a J-frame-type revolver. The SDR will also fit in a holster sized for a J-frame.

Details of the high-visibility sights on top of the Diamondback SDR revolver.Sights on the SDR use three fiber-optic light pipes.

The Diamondback Firearms SDR has an MSRP of $777. For more information, visit



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