When selecting parts and accessories for a defensive firearm, durability and corrosion resistance are non-negotiable. A hardened, corrosion-resistant magazine tube can extend service life, reduce malfunctions, and simplify maintenance—especially for pistols carried or used regularly in demanding environments.
KAHR ARMS KAHR PM45/CM45 is a replacement magazine tube engineered to meet those needs. The Kahr magazine tube is constructed of corrosive resistant 400 series stainless steel and heat treated to 50 rockwell hardness for durability. 
Price is listed at $28.79, making it an affordable upgrade for owners who prioritize longevity and low-maintenance components. Shop this product
Materials and Hardness: What 400 Series and 50 Rockwell Mean
The 400 series stainless steel family offers strong corrosion resistance while maintaining toughness—well-suited to magazine tubes that are exposed to sweat, oils, and environmental moisture. Heat treating to 50 Rockwell hardness improves wear resistance against repeated loading cycles, follower friction, and impact from dropped magazines. Practically, this translates to a tube that resists deformation, pitting, and premature wear under normal and extended use.
Fitment, Compatibility, and Practical Use
As its name implies, the part is matched to PM45 and CM45 platforms from Kahr Arms, a brand known for compact, reliable defensive pistols. Owners of these models will find the tube swaps in with a simple field-strip procedure and minimal tools. The upgrade is particularly useful for those who carry daily or maintain a high round-count training schedule: less maintenance and more consistent feeding. View product details and pricing
Maintenance and Long-Term Value
Stainless construction reduces the need for frequent lubricant-dependent anti-corrosion measures. Even so, routine inspection and light cleaning are recommended to preserve finish and function. At $28.79, this tube is a cost-effective investment in reliability—especially when compared to replacement costs for worn or corroded factory parts.
Practical Recommendation
For owners of Kahr PM45 and CM45 pistols seeking a durable, low-cost upgrade, this hardened 400 series stainless tube delivers meaningful performance gains in wear and corrosion resistance. Check current availability on the product page and verify fitment for your specific model before ordering. Check availability
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People Also Ask
What makes this product stand out from competitors?
This product offers superior quality and innovative features that set it apart in the market. Its design focuses on both performance and reliability, making it a top choice for professionals and enthusiasts alike.
Is this product suitable for beginners?
Yes, this product is designed with user-friendly features that make it accessible to beginners while still offering advanced capabilities for experienced users.
What warranty or support is available?
The product comes with comprehensive warranty coverage and excellent customer support to ensure your satisfaction and peace of mind.
How does this compare to similar products in its price range?
This product offers exceptional value for its price point, providing features and quality that typically cost significantly more in comparable alternatives.
What maintenance is required?
Minimal maintenance is required thanks to the product’s durable construction and quality materials. Regular cleaning and occasional inspections will keep it performing optimally.
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