Description

The Kahr PM45 is one of the smallest and lightest .45 ACP semi-automatic pistols made, optimized for deep concealed carry or backup use. It pairs a thin polymer frame with a stainless steel slide, a match-grade polygonal rifled barrel, and a smooth double-action-only (DAO) trigger in a very compact package. Despite its diminutive size, it delivers the potent .45 ACP cartridge with manageable recoil and reliable performance.

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Specifications

General

• Caliber: .45 ACP (Automatic Colt Pistol)
• Action: Striker-fired, Double-Action-Only (DAO) trigger
• Role: Ultra-compact carry / backup pistol
• Series: Premium PM Series (polymer frame)

Capacity & Magazine

• Standard Capacity: 5 + 1 rounds 
• Magazines Included: Typically two 5-rd magazines (plus a 6-rd extended one on some packages)

Barrel & Sights

• Barrel Length: ~3.24 inches match-grade polygonal rifling
• Rifling Twist: 1-16.38″ RH
• Sights: Drift-adjustable combat sights; tritium night sights often optional or installed

Frame & Slide

• Frame Material: Lightweight textured polymer 
• Slide Material: Matte blackened stainless steel or matte stainless finishes depending on variant
• Slide Width: ~1.01 inches 

Dimensions & Weight

• Overall Length: ~5.79 inches 
• Height: ~4.49 inches 
• Weight: ~17.3 oz unloaded (slide & frame)

Safety & Internals

• Operation: Locked-breech system with Browning-type recoil lug
• Safeties: Passive striker block internal safety; no manual safety or magazine disconnect
• Trigger Feel: Smooth, consistent DAO pull with long travel and positive reset

Carry & Use

• Concealability: Very small footprint for .45 ACP; fits deep-carry holsters and pockets
• Recoil: .45 ACP recoil in such a light pistol is noticeable but manageable due to design geometry and spring system
• Best Use: Backup defense, deep concealment, or off-duty carry

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Notes

• The PM45 stands out as one of the lightest .45 ACP options available, with a package comparable in size to many 9 mm pistols yet chambered in the larger caliber.
• Like many Kahr pistols, it has smooth DAO trigger travel and tight tolerances, which usually benefit accuracy but may require a brief break-in period.