The FK Brno FKFIELD75 is a single-action semi-automatic pistol chambered in the proprietary 7.5 FK cartridge. The cartridge pushes high velocity and flat trajectory, giving the Field a useful practical range well beyond what most handguns can manage. Accuracy is guaranteed to a less-than-100x100 mm rectangle at 100 meters from the factory. 
 

Key Specifications 

• Model: Field 
• Caliber: 7.5 FK 
• Action: Semi-Automatic (Single Action) 
• Capacity: 15 rounds 
• Barrel Length: 6 inches 
• Length: 240 mm (9.5 inches) 
• Width: 25.5 mm (1 inch) 
• Height without sight: 136 mm (5.3 inches) | with butterfly sight: 143 mm (5.6 inches) 
• Weight: 1300 g (46 oz) 
• Finish/Color: Nitridation / Dark Gray 
• Grip Design: Rounded and squared back versions 
• Sights: Adjustable Brno butterfly sight for windage; front sight pre-adjusted for elevation 
• Accuracy Guarantee: Less than 100x100 mm rectangle at 100m 
   
  The steel frame is nitrided to dark gray, which handles wear and corrosion without the visual bulk of a traditional blued or stainless finish. The 6-inch barrel gives the 7.5 FK cartridge room to develop velocity while keeping the overall length at 240 mm. Both rounded and squared grip back options ship with the pistol, so you can dial in the fit without buying aftermarket parts. The Brno butterfly sight adjusts for windage at the rear; elevation is factory-set at the front. 
   
  At 46 oz unloaded this isn't a carry gun for most shooters, but it's comfortable at the bench or on a competition stage where the weight helps manage the cartridge's recoil impulse.

The FK Brno Field 7.5 draws a particular kind of buyer, usually someone who's already comfortable with standard calibers and wants something genuinely different. The 7.5 FK cartridge is the main talking point. Owners who shoot it at distance report tight groups and a noticeably flat trajectory, and the factory accuracy guarantee at 100 meters holds up in practice for most. The caliber's uniqueness cuts both ways: the performance excites enthusiasts, while ammunition cost and availability concern anyone who wants to shoot it regularly.

Ergonomics come up favorably. The grip options let owners tune the fit, and extended range sessions don't generate many complaints about hand fatigue. The nitrided dark gray finish is described as understated and durable.

At 46 oz the weight is a real consideration. Competitive shooters and range users don't seem bothered; anyone thinking about carry generally moves on after handling it.

Build quality is consistently praised. The steel construction and machining quality read as high-end to owners familiar with production pistols. Price is high by any measure, and the debate in the community is whether the performance and novelty justify it. Customer support experiences are mixed, which is worth noting given the specialized parts and caliber.