15 Common Kahr PM45 Problems

The Kahr PM45, while a popular choice among firearm enthusiasts for its compact size and powerful output, has been associated with a number of common issues. 

This guide is intended to help readers understand and troubleshoot these problems. 

The 15 most frequently reported concerns include matters related to the firearm’s performance, handling, and maintenance. 

Please note that safety should always be the primary consideration when handling firearms, and professional assistance should be sought for serious or persistent issues.

Kahr PM45 Problems

Kahr PM45 Problems

1. Difficult Break-In Period


The Kahr PM45 is known for its tough break-in period, largely due to its tight tolerances and machined steel construction. 

This can lead to stiff action and intermittent failures to feed, particularly in the initial 200-300 rounds.


To overcome this issue, it is crucial to follow Kahr’s recommended break-in procedure, which involves firing a specified number of rounds to smooth out the action. 

Regular cleaning and proper lubrication can also help to ease the break-in process, improving the firearm’s reliability and performance over time.

2. Slide Lock Issues


The slide lock of the Kahr PM45 sometimes fails to engage after the last round has been fired. 

This issue arises due to inconsistencies in the slide-stop spring tension or issues with the magazine follower. 

The resulting misalignment inhibits the upward movement of the slide lock, preventing it from performing its vital function of holding the slide open once the magazine is empty.


Fixing the slide lock issue requires attention to the slide stop spring and the magazine follower. 

A detailed inspection can help uncover any abnormal bends in the spring or wear and tear in the magazine follower. 

Replacing or adjusting these parts as necessary will typically resolve the issue. 

Remember that it’s always best to let a certified armorer or gunsmith handle these tasks to ensure safety and proper function.

3. Magazines Falling Out


One problem that users have reported with the Kahr PM45 is that the magazines tend to fall out during operation. 

This issue is primarily associated with the magazine release mechanism, which might release the magazine accidentally during firing, due to high recoil. 

Another possible cause can be wear and tear on the magazine catch notch, leading to a weak retention of the magazine.


Addressing the issue of magazines falling out involves checking and potentially replacing the magazine release spring and button. 

It’s also recommended to inspect and replace any magazines with worn-out catch notches. 

Remember, these procedures should ideally be performed by a certified armorer or gunsmith to ensure the firearm functions safely and correctly. 

Regular maintenance and checks can prevent such issues from arising in the first place.

4. Insufficient Trigger Reset


The Kahr PM45 may sometimes exhibit an issue with insufficient trigger reset, where the trigger does not return to its original position after a round is fired. 

This problem is usually due to a weak or damaged trigger reset spring. 

The issue can also be attributed to excess grime or debris build-up, which interferes with the movement of the trigger assembly.


To solve the problem of insufficient trigger reset, it is recommended to inspect the trigger reset spring for any signs of wear or damage and replace it if necessary. 

Cleaning the trigger assembly thoroughly can also alleviate the issue by removing any grime or debris that may be hindering the trigger reset. 

As always, these tasks should be performed by a certified armorer or gunsmith to ensure the firearm is functioning safely and correctly. 

Regular care and maintenance can help prevent such problems from occurring.

5. Heavy Recoil


The Kahr PM45, while compact and powerful, is notorious for its heavy recoil. 

This is primarily a result of its lightweight design coupled with its .45 ACP caliber. 

The energy generated by the discharge of the .45 ACP round tends to create a substantial kickback, which might make handling the firearm uncomfortable, especially for those with less experience or smaller hands.


Mitigating the heavy recoil issue can be approached in several ways. First, practicing often with the firearm can help you adapt to the recoil over time. 

Additionally, recoil can be reduced by using lower-grain ammunition or installing a recoil-reducing grip. 

However, it’s essential to consult with a certified armorer or gunsmith before making any modifications to ensure the safe and effective operation of the firearm. 

6. Excessive Muzzle Flip


Excessive muzzle flip is another commonly reported issue with the Kahr PM45. 

This problem is primarily due to the lightweight design of the firearm and the powerful .45 ACP caliber it fires. 

Muzzle flip, or the upward movement of the firearm’s barrel after firing, is a natural reaction to the force exerted by the discharged round. 

In the case of the Kahr PM45, the significant power of the .45 ACP round coupled with the lightness of the firearm can lead to an exaggerated muzzle flip, which may affect shooting accuracy and control.


Addressing the issue of excessive muzzle flip involves a combination of technique adjustment and potential equipment modifications. 

Learning to properly grip the firearm and using a stance that absorbs the recoil can significantly reduce muzzle flip. 

Equipment-wise, installing a muzzle brake or compensator can help to redirect propellant gases, reducing the upward movement of the muzzle. 

As always, any modifications should be done in consultation with a certified armorer or gunsmith to ensure safety and efficacy. 

7. Failure to Feed


Issues with the failure to feed in the Kahr PM45 typically originate from the magazine or the ammunition. 

A damaged or worn-out magazine can lead to improper round positioning, preventing the bullet from feeding into the chamber correctly. 

Similarly, using incorrect or low-quality ammunition can also cause feeding issues due to inconsistent dimensions or poor construction.


Resolving the failure to feed issue generally involves checking the magazine and ammunition. 

Inspect the magazines for any visible signs of wear or damage and replace them if necessary. 

Additionally, ensure that the ammunition used is of high quality and correct for the firearm. 

It is recommended to have these checks conducted by a certified armorer or gunsmith and to maintain regular cleaning and maintenance of your firearm to forestall such issues.

8. Failure to Eject


The issue of “Failure to Eject” in the Kahr PM45 commonly arises from a faulty or worn-out extractor. 

The extractor’s role is to remove the spent casing from the firearm’s chamber after firing. 

If the extractor is damaged, it might not grip the casing adequately, leading to a failure in ejection. 

Further, a dirty or under-lubricated firearm could also result in this issue, as grime build-up might hinder the smooth operation of the extractor.


Addressing the “Failure to Eject” issue involves inspecting the extractor for any signs of wear, damage, or breakage, and replacing it if necessary. 

It’s also crucial to regularly clean and lubricate the firearm to prevent dirt or grime build-up that could interfere with the ejecting mechanism. 

As always, these tasks should be undertaken by a certified armorer or gunsmith, ensuring the firearm is functioning safely and correctly. 

9. Firing Pin Issues


Issues surrounding the firing pin in the Kahr PM45 can occur due to a variety of factors. 

The most common cause is a damaged or worn-out firing pin, which can fail to strike the primer with sufficient force to ignite the round. 

Also, a buildup of grime or debris in the firing pin channel can obstruct the pin’s movement, causing misfires.


Rectifying firing pin issues primarily involves inspecting the firing pin and its channel. 

If the firing pin is damaged or excessively worn, it should be replaced. Additionally, cleaning the firing pin channel to remove any buildup can help ensure smooth, unobstructed movement of the firing pin. 

As with all firearm maintenance and modification tasks, these actions should be carried out by a certified armorer or gunsmith to ensure safety and proper functionality. 

10. Grip Size Discomfort


The discomfort experienced due to the grip size of the Kahr PM45 often arises from its compact design. 

This makes it a great concealed carry option, but may not be ideal for every hand size. 

For individuals with larger hands, the reduced grip size can make the firearm challenging to hold comfortably and securely, impacting shooting accuracy and control.


Overcoming this discomfort generally involves using grip enhancements or extensions, which can provide a larger holding surface and improve comfort. 

Adjustable or replaceable grips are available in the market that can cater to a range of hand sizes and preferences. 

As always, any adjustments should be made in consultation with a certified armorer or gunsmith to ensure safety and proper handling. 

Training to adapt to the grip size can also be beneficial. 

11. Inaccurate Shot Placement


Inaccurate shot placement with the Kahr PM45 can stem from an array of factors. 

The primary culprits can be the firearm’s compact size and lightweight nature, which make it more susceptible to recoil and muzzle flip, thereby affecting accuracy. 

More, issues such as grip discomfort, or improper sight alignment can also contribute to inaccurate shot placement.


Rectifying this issue involves a blend of technique refinement and possible equipment modifications. 

Practicing proper grip, stance, and sight alignment can greatly enhance accuracy. 

Furthermore, equipment modifications such as installing a muzzle brake can help in reducing recoil and muzzle flip. Regular practice is key in mastering the handling of the Kahr PM45. 

As always, consult a certified armorer or gunsmith for safe and effective modifications.

12. Difficulty in Field Stripping


Field stripping the Kahr PM45 can be challenging due to its compact design and tight assembly. 

The components fit snugly together, which can make disassembly and reassembly quite difficult, especially for beginners or those unfamiliar with the firearm’s architecture.


To mitigate difficulties in field stripping, it’s advisable to familiarize oneself with the firearm’s construction and disassembly process through the user manual or instructional videos. 

Patience and practice are critical in mastering this task. 

It’s also beneficial to have a certified armorer or gunsmith guide you through the first few attempts to ensure a safe and correct procedure. 

13. Quality Control Issues


Quality control issues with the Kahr PM45 predominantly stem from inconsistencies during the manufacturing process. 

These may include improper fitting of parts, inadequate inspection of the firearms before they leave the factory, or the use of components not up to the standard. 

Such inconsistencies can lead to a range of problems, including those discussed earlier, such as failure to eject, firing pin issues, grip discomfort, inaccurate shot placement, and difficulty in field stripping.


Addressing these quality control issues involves a commitment from the manufacturer to improve their production and inspection processes. 

However, for existing owners facing these issues, it is advisable to have the firearm inspected and any substandard components replaced by a certified armorer or gunsmith. 

Regular cleaning and maintenance of the firearm can also mitigate some of these problems. 

Despite the possible initial hurdles, once these quality issues are addressed, the Kahr PM45 stands out for its compact design and utility in concealed carry scenarios.

14. Sight Alignment Problems


Misaligned sights on the Kahr PM45 can significantly affect the accuracy of the firearm. 

This problem is often the result of improper installation or adjustment of the sights. 

Over time, the sights can shift or become loose due to the recoil generated from firing, leading to inaccurate shot placement.


Correcting sight alignment issues entails careful inspection and realignment of the sights by a certified armorer or gunsmith. 

An expert can properly reinstall or adjust the sights to ensure they are properly aligned for accurate shooting. 

Regular inspection of the sights and their alignment can help maintain accuracy and improve the overall performance of the Kahr PM45.

15. Barrel Peening


Barrel peening in the Kahr PM45 is typically a result of overuse or a lack of regular maintenance and cleaning. It can also occur due to the use of inappropriate or substandard ammunition. 

This issue manifests as deformations in the barrel, which can affect the firearm’s performance and, in severe cases, its safety.


Tackling barrel peening primarily involves regular cleaning and maintenance of the firearm, along with the use of high-quality ammunition. 

If signs of severe peening are noticed, it is recommended to replace the barrel promptly to avoid any safety issues. 

As with all firearm-related issues, any modifications or replacements should be carried out by a certified armorer or gunsmith to ensure safety and proper functionality.


In conclusion, while the Kahr PM45 is a compact, powerful, and generally reliable firearm, it does experience a few issues that potential buyers should be aware of. 

Some users have reported feeding issues, particularly when using certain types of ammunition. 

Additionally, the recoil can be strong due to the weapon’s lightweight and compact design, which may not suit all users. 

Lastly, the break-in period can be lengthy and may require a few hundred rounds before reaching optimal performance. 

Despite these issues, the Kahr PM45 remains a popular choice for those seeking a lightweight, concealable firearm with a powerful .45 caliber punch. 

As always, it’s recommended that potential buyers try out the firearm themselves before making a purchase decision.


How many rounds does a Kahr 45 hold?

The Kahr PM45 is designed to hold 5 rounds in its standard magazine. However, with one in the chamber, it can carry a total of 6 rounds at once.

Does a Kahr 45 have a safety?

The Kahr PM45 does not have a traditional manual safety switch. Instead, it utilizes a passive safety system built into the firearm’s design to prevent accidental discharges.

How much does a Kahr PM 45 weigh?

The Kahr PM45 is a lightweight firearm, weighing in at approximately 17.3 ounces when unloaded. This makes it a practical choice for concealed carry and easy transportation.

Are Kahr pistols double-action?

Yes, Kahr pistols, including the PM45, are double-action. This means that pulling the trigger performs two actions: it cocks the hammer and then releases it to fire the bullet.

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