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The Browning Buck Mark has been earning its reputation since 1985, and the Micro Bull UFX is one of the more focused configurations in the lineup. Where the standard-length Buck Marks lean toward target work at the bench, the Micro Bull keeps things tight with a 4-inch steel bull barrel that gives you a shorter overall package without giving up the weight and stability that makes the bull profile so accurate. The frame starts as a billet of aircraft-grade 7075 aluminum alloy and gets CNC machined to tight tolerances, so you're not dealing with a cast or stamped receiver like you'll find on cheaper rimfire pistols. The straight blowback action is about as simple and reliable as a semi-auto gets, and the hand-reamed chamber with a recessed muzzle crown tells you Browning actually cares about accuracy and not just assembly speed.
The UFX in the name refers to the Ultragrip FX overmolded grip panels, which are ambidextrous and sized for a narrower profile that works well for a wide range of hand sizes. The rubber overmolding gives you a confident grip without being aggressive on your hand during extended range sessions. The 16-click adjustable Pro-Target sights are a genuine feature, not just a marketing term for a rear notch with a set screw, and they give you real windage and elevation adjustment for dialing in your preferred load. The recessed muzzle on the bull barrel and the built-in slide recess with raised side panels are small details that make the gun easier to run and more durable over time.
This pistol rewards you for using quality ammo. Standard velocity loads like CCI Standard Velocity or similar target-grade .22 LR tend to run the cleanest and shoot the tightest groups. The 4-inch sight radius is shorter than a full-size Buck Mark, which asks a little more of the shooter at distance, but it also makes the pistol noticeably more packable and easier to handle for newer or smaller-framed shooters. The single-action trigger is one of the cleaner rimfire triggers you'll find at this price point, with a pull that settles in nicely and gets even better after a few hundred rounds. Like any rimfire, keep it reasonably clean and it will keep running, and the Buck Mark's open design makes basic maintenance straightforward.
This model ships with one 10-round magazine and a pistol rug. Earlier runs sometimes included two magazines, but current production of this specific configuration includes one. Additional Buck Mark 10-round magazines are widely available and inexpensive if you want extras for range use.
This particular model does not come with an integrated Picatinny rail. However, Browning offers an accessory sight base that can be added to the top of the receiver, and aftermarket rail solutions from companies like Tactical Solutions are also available. If optics-ready is a priority out of the box, Browning does make other Micro Bull variants that include a rail or an RMSc footprint.
The Buck Mark generally performs best with standard velocity target loads like CCI Standard Velocity, Federal Champion, or similar quality rimfire ammunition. High-velocity bulk ammo will usually cycle fine once the gun is broken in, but very cheap or underpowered loads can cause occasional failures to eject. Like most .22 semi-autos, keeping it clean makes a noticeable difference in reliability across ammo types.
The Micro Bull uses the same proven aluminum frame and blowback action as the longer models, just with a 4-inch barrel instead of 5.5 inches. You give up a little sight radius and some muzzle velocity, but you get a shorter, lighter pistol that is easier to carry and more manageable for newer shooters. The accuracy is still excellent for a rimfire pistol, especially with quality ammo.
The Buck Mark has a slightly different teardown process compared to something like a Ruger Mark series, and Browning actually recommends cleaning it assembled for routine maintenance rather than fully disassembling the internal action. For most range use, running a bore brush and patches through the barrel and wiping down the action is all that is needed. A basic hex wrench is used to remove the top rail/receiver cover if you need deeper access.
It works well for a wide range of people: new shooters who want something well-built and easy to manage, experienced rimfire fans who appreciate quality construction at a reasonable price, and anyone who wants a compact .22 pistol for range practice or skill development. The UFX grips are genuinely ambidextrous and narrow enough to fit smaller hands comfortably, which makes it a good option for training with a wider group of shooters.
| UPC | 023614735328 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | 051537490 |
| Action | |
| ATF Type | Pistol |
| Barrel Length | 4" |
| Caliber/Gauge | .22 LR |
| Capacity | 10 + 1 |
| Color | Black |
| Length | 16 |
| Number of Magazines | 1 10 rd. |
| Package Height | 2.6 |
| Package Width | 7.8 |
| Product Type | Semi-Auto Pistol |
| Safety | Manual Thumb |
| Shipping Weight | 2.9 |
| Sights | Black Front, Black Rear |
| Sights Type | Adjustable Sights |
| Slide Description | Black Aluminum |
| Units per Box | 1 |
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