The Diamondback Sidekick is a DA/SA revolver with a dual-caliber cylinder system that accepts both .22LR and .22MAG. That swap capability is the gun's defining feature — you can run cheap .22LR for plinking and training, then switch to .22MAG when the application calls for more energy. 
 

Key Specifications 

• Brand: Diamondback 
• Model Name: Sidekick 
• Action: Double/Single Action (DA/SA) 
• Caliber: .22LR / .22MAG 
• Barrel Length: 4.5 inches 
• Capacity: 9 rounds 
• Weight: 2 lbs (32.50 oz) 
• Sights: Blade Front / Integral Rear 
• Grip Material: Black Polymer 
• Finish: Dark Gray Cerakote barrel / Black Cerakote cylinder 
• Overall Length: 9.88 inches 
   

Detailed Features 

 
The dual-cylinder setup lets you switch between .22LR and .22MAG depending on what you need. At 2 lbs with a polymer grip, the Sidekick is light enough to carry all day without fatigue. The blade front and integral rear sights are straightforward — nothing fancy, but they get you on target at typical handgun distances. The Cerakote finish on both the barrel and cylinder resists corrosion and holds up to field use reasonably well. 
 
Recoil in both calibers is mild, which makes the Sidekick accessible to newer shooters and good for extended range sessions. The DA/SA trigger gives you the option of a heavier double-action pull or a lighter cocked single-action pull.

The Diamondback Sidekick comes up often in budget-revolver discussions, and the community is split in predictable ways.

The dual-caliber feature draws the most consistent praise. Being able to swap between .22LR and .22MAG without buying a separate gun is a genuine advantage, especially for small game hunters and shooters who want to keep training costs down with cheaper .22LR while still having .22MAG available.

The price point attracts a lot of first-time buyers. Most report a good shooting experience — low recoil in both calibers, manageable handling, and enough accuracy for plinking and casual range work. Veteran shooters sometimes find the trigger pull needs improvement for precision work.

Build quality is where opinions diverge. Plenty of owners report no issues. Others have noted timing and cylinder alignment problems, and there are enough durability concerns in the reviews to warrant attention if longevity matters. The finish gets mixed marks too — some find the two-tone Cerakote look appealing, others prefer a more traditional aesthetic.

Customer service experiences vary widely. Some owners report fast and satisfactory warranty support; others describe slow responses and unsatisfactory resolutions. Worth keeping in mind if long-term reliability is a priority.