Browning Buck Mark rimfire pistols lead the industry in quality, reliability, accuracy and variety. Every Buck Mark starts out as a solid piece of aircraft-grade 7075 aluminum alloy, and then is CNC machined to exacting tolerances. The crisp single-action trigger, hand reamed chamber, target crowned barrel and finely adjustable target sights mean the Buck Mark comes ready for fun straight from the box. The Buck Mark pistol is one of the most proven 22 rimfire designs in the world today. It superseded the original Challenger series of Browning 22 Long Rifle pistols in about 1985. Over the years the design of the Buck Mark has remained very similar with refinements most often in aesthetic design, grips and finishes.