Browning Buck Mark Plus Micro, Semi-automatic, Metal Frame Pistol, 22 LR, 4 Barrel, UFX Grips, Silver Stainless Steel Barrel and Slide, Black Frame, 10 Rounds, 2 Magazines 051605490 The Browning Buck Mark is a favorite among rimfire plinkers and competitive shooters. The single-action, blowback operated autoloading design is one of simplicity and reliability. The controls are easy to reach and use. The Plus Micro Bull Stainless features a 4" stainless steel bull barrel that retains heft to improve stability and accuracy.