The Kahr Arms P40 chambered in .45 ACP is a compact semi-automatic pistol built for concealed carry. The blackened stainless steel slide sits over a black polymer frame, keeping the overall length to 6 inches with a 4-inch barrel. Capacity is 6 rounds. The double-action trigger requires no manual cocking between shots, and fixed sights keep things simple. Weight is not specified in available data. 
 

Key Specifications 

• Manufacturer: Kahr Arms 
• Model: P40 
• Caliber: .45 ACP 
• Barrel Length: 4 inches 
• Capacity: 6 rounds 
• Frame Finish: Black polymer 
• General Finish: Blackened stainless steel 
• Grip Material: Polymer 
• Action Type: Double action 
• Total Length: 6 inches 
• Sights Type: Fixed

User feedback on the Kahr P40 in .45 ACP hits a familiar set of themes. The compact size and light carry weight are consistently praised. Owners appreciate having .45 ACP stopping power in a frame they can actually conceal. Ergonomics are generally well-regarded, with most finding the grip comfortable for both carry and extended range sessions. Reliability after break-in is another common positive, and many owners report confidence in the gun for self-defense.

The long double-action trigger pull is the most common criticism, and it does take training time before it stops affecting accuracy. Six-round capacity is limiting compared to other compact options. Some owners report an initial break-in period with occasional feeding issues before the gun settles in. Holster and accessory availability is narrower than for higher-volume models. Price is occasionally flagged as high relative to comparable competitors.

The P40 .45 ACP works well for those specifically wanting this caliber in a compact carry package, but the trigger and capacity tradeoffs are real and worth weighing.