The Kahr P45 is a .45 ACP semi-automatic pistol with a stainless steel finish, 3.4-inch barrel, 6+1 capacity, and TruGlo night sights. The DAO action and compact 6.07-inch overall length make it purpose-built for concealed carry. 
 

Key Specifications 

• Brand: Kahr Arms 
• Model: P 
• Caliber: .45 ACP 
• Action Type: Semi-Automatic (DAO) 
• Barrel Length: 3.4 inches 
• Capacity: 6+1 rounds 
• Weight: 1.2 lbs (18.5 oz) 
• Finish Material: Stainless Steel 
   

Detailed Features 

The stainless finish on the slide resists corrosion without an applied coating, which holds up well to the humidity and sweat exposure typical of a daily carry gun. 
 
The polygonal rifled barrel is accurate and wears well over high round counts. The DAO trigger delivers a consistent pull on every shot -- no hammer to pre-cock, no external safety to manage. The mechanism is straightforward under stress. 
 
TruGlo night sights are installed from the factory. This is a meaningful inclusion on a carry pistol that may be used in low-light conditions. 
 
At 18.5 oz and 6.07 inches, the P45 is one of the more compact .45 ACP semi-autos in production. The textured polymer grip holds well but the short panel limits full-hand purchase, which amplifies felt recoil from .45 ACP. 
 

Target Audience 

Shooters who want .45 ACP in a small, carry-optimized DAO package without aftermarket sights. Suitable for experienced shooters comfortable with the DAO mechanism and .45 ACP recoil management in a light frame. 
 

Usage Scenarios 

• Concealed Carry: Compact dimensions and factory night sights make this a complete IWB carry setup. 
• Backup Gun: The small profile works for ankle or off-body carry. 
• Home Defense: DAO trigger and night sights are well-suited for low-light home defense use.

The Kahr P45 in stainless with night sights appeals primarily to carry shooters who want .45 ACP in the smallest practical form factor.

The stainless finish is consistently mentioned as a practical choice for carry -- it holds up to sweat and holster use without requiring the maintenance attention a blued finish demands.

The TruGlo night sights are noted as a factory value-add. Most buyers see this as a reason to choose the Kahr over competitors that require aftermarket sight purchases to achieve the same capability.

The DAO trigger pull is heavier than striker-fired alternatives, which draws some criticism from users accustomed to lighter pulls. Shooters with DA/SA or DAO background find it appropriate for carry use.

Break-in reliability comes up in multiple discussions. Some users report inconsistent feeding and ejection during the first few hundred rounds. The consensus is that this improves with round count, though a small number of users had persistent issues.

The grip size is a known limitation. .45 ACP in an 18.5-oz frame with a short grip panel requires technique -- the combination of low mass and powerful cartridge produces more felt recoil than most full-size alternatives. Users who accept this as a trade-off for concealability generally rate the gun well.