Description
The Buck Mark has been a rimfire benchmark since 1985, and this Micro Bull SR version takes the classic and bundles in everything a plinker or steel-plate shooter wants right out of the box. You get a Crimson Trace red dot already mounted on the serrated, optic-ready slide, a stainless bull barrel threaded for a can, and a green fiber-optic front sight that co-witnesses with the dot. It runs on Browning's single-action, blowback design, which is about as simple and dependable as rimfire pistols get.
What Makes the Micro Bull SR Different
The heart of this gun is the 4.4" matte black stainless bull barrel. That extra mass up front soaks up the already-mild .22 LR recoil and keeps the muzzle steady, which is a big part of why these are so easy to shoot well. The barrel wears 1/2×28 threads with a protector installed, so adding a suppressor is a no-brainer when you pair it with subsonic ammo. The aluminum frame starts as a billet of 7075 and gets CNC machined to tight tolerances, so the fit and finish feel a cut above the price point.
Sighting Options on the Buck Mark Micro Bull
Having the Crimson Trace dot already on the gun saves you the headache of sourcing a mount and zeroing from scratch. The co-witness setup means the green fiber-optic front and adjustable rear sights line up under the dot, so you've got a backup if the battery dies or you just prefer irons. For fast target acquisition on steel or cans, the dot is hard to beat.
Real-world feedback on these has been strong. After a short break-in of a couple hundred rounds, owners report rock-solid reliability across a wide spread of bulk and premium .22 ammo, and the accuracy tends to tighten up as the gun settles in. It's a great choice for plinking, casual competition like Steel Challenge, and teaching a new shooter the ropes without beating up their hands.
Key Specifications
- Manufacturer: Browning
- Model: Buck Mark Micro Bull Stainless Red Dot SR
- MPN: 051595490
- UPC: 023614861706
- Caliber: .22 LR
- Action: Single Action, Blowback Semi-Auto
- Capacity: 10+1
- Barrel Length: 4.4" Stainless Bull Barrel
- Barrel Threads: 1/2×28 TPI, Suppressor Ready
- Overall Length: 8.25"
- Sights: Crimson Trace Red Dot, Green Fiber Optic Front, Adjustable Rear
- Slide: Optic Ready / Serrated
- Frame: Matte Black Aluminum w/ Picatinny Rail
- Grips: Rubber Overmolded URX Ambidextrous
- Color: Bi-Tone (Stainless Barrel / Black Frame)
- Weight: Approx. 29 oz
What’s Included
- Buck Mark Micro Bull SR pistol
- One 10-round steel magazine
- Crimson Trace red dot sight (mounted)
- Thread protector
- Owner's manual
Frequently Asked Questions
Does the Buck Mark Micro Bull SR come with a red dot already mounted?
Yes. This model ships with a Crimson Trace red dot mounted on the optic-ready serrated slide. It also has co-witnessing iron sights, so the green fiber-optic front and adjustable rear line up under the dot as a backup.
Is the barrel threaded for a suppressor?
It is. The 4.4" stainless bull barrel comes with 1/2×28 threads and a thread protector installed. Pair it with subsonic .22 LR ammo and a can for a very quiet, fun range gun.
What kind of accuracy can I expect from this Micro Bull?
The heavy bull barrel adds weight up front that steadies the muzzle and tames the already-light .22 recoil, which makes the gun easy to shoot well. Owners regularly report ringing steel at distance once the dot is zeroed. A short break-in usually tightens groups even further.
Will it run bulk ammo or does it need premium .22?
After a break-in period of roughly 200 rounds, these Buck Marks tend to run reliably across a wide mix of bulk and premium ammo. Many shooters break theirs in with CCI Mini Mags before switching to cheaper bulk loads. As with any rimfire, a quick cleaning now and then keeps things running smooth.
Is the Buck Mark Micro Bull a good choice for a new or younger shooter?
It's one of the better picks out there for teaching. The low recoil, manageable size, and forgiving accuracy make it confidence-building, and the red dot helps newer shooters get on target fast without fighting iron sight alignment.
Can I add other optics or accessories to it?
Yes. The frame has a Picatinny rail and the slide is optic ready, so you have options if you ever want to swap the red dot. The Buck Mark platform also has a huge aftermarket for grips, sights, and mounts.





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