The Hammerli Arms Force B1 is a .22 LR bolt-action rifle with a Quick-Change Barrel System that lets you swap between barrel lengths and calibers without tools - including .22 WMR with the appropriate barrel. The straight-pull toggle-style bolt action cycles quickly while maintaining solid lockup for consistent accuracy. Weighing 5.75 lbs with a 16.1-inch barrel, it stays manageable over longer outings. 
 

Key Specifications 

• Model: Hammerli Force B1 
• Caliber: .22 LR 
• Barrel Length: 16.1 inches 
• Capacity: 10 rounds 
• Weight: 5.75 lbs. 
• Finish: Matte Black 
   

Detailed Features 

• The Quick-Change Barrel System switches between barrel lengths and calibers (.22 LR and .22 WMR) without tools, broadening the rifle's use cases without requiring a second gun. 
• The straight-pull bolt moves faster than a traditional turn-bolt for quicker follow-up shots while keeping a secure lock at the moment of firing. 
• An adaptable magwell with Hammerli's proprietary adapter accepts Ruger rotary-style magazines in both .22 LR and .22 WMR configurations. 
• The adjustable stock allows length of pull and comb height changes without tools to fit a range of shooters. 
• Picatinny rail supports optics mounting for shooters who want to glass at longer distances. 
   

Usage Scenarios 

At the range it suits target practice where the straight-pull action keeps a fast pace. For small game the light weight and quiet muzzle blast of .22 LR are practical. Trainers appreciate the adaptable setup for teaching marksmanship basics without heavy caliber costs.

The Hammerli Force B1 in .22 LR draws mostly positive reviews for its accuracy and the practical appeal of the quick-change barrel system. Owners who have used it for target shooting and training describe it as performing well in that role.

The barrel swap feature is frequently highlighted as a genuine advantage for those who want one rifle to cover multiple configurations. The ergonomic design and light weight are consistently mentioned as contributors to comfortable extended use.

On the critical side, some users report reliability hiccups with certain ammunition, noting the rifle can be picky about what it feeds consistently. Build quality is rated positively by most, though a few owners feel specific components could be more robust. Aftermarket accessories and parts availability comes up as an area where the platform trails more established rimfire rifles.

The general recommendation is to verify ammunition compatibility before settling on a load, particularly with budget bulk options.