Diamondback has developed the Sidekick revolver with swing-out cylinders in both .22 LR and .22 Magnum variants, presenting a visually and tactilely appealing cowboy-style firearm. While inspired by the Hi Standard Double-Nine, Diamondback has enhanced the Sidekick by incorporating interchangeable cylinders and repurposing the ejector latch to facilitate easy opening for loading and unloading. Notably, the Sidekick incorporates counter-bored cylinder chambers, allowing for safe dry firing without any damage to the cylinders or firing pin. With the utilization of modern manufacturing techniques and materials, the Sidekick offers improvements over its predecessor. Despite its slightly shorter barrel length of 4.5 inches compared to the Double-Nine's 5.5 inches, the Sidekick weighs 2 pounds, slightly heavier than the Double-Nine. This added weight suggests the use of stronger materials in its construction. The Sidekick features a black-anodized aluminum frame with checkered black grips, distinguishing it from the Double-Nine. Additionally, the Sidekick's single-action trigger has a crisp break at 3 pounds, while the Double-Nine's trigger exceeds 4 pounds. Although both guns' double-action pull exceeds the 12-pound limit on a Lyman trigger pull gauge, it remains manageable for shooters. In summary, the Diamondback Sidekick revolver showcases an attractive cowboy design while incorporating modern enhancements. With its interchangeable cylinders, counter-bored chambers, and robust construction, the Sidekick provides a durable and enjoyable shooting experience.