Spare magazines are one of the simplest, most effective upgrades you can add to a defensive setup. A durable replacement magazine reduces the odds of a malfunction when you need your firearm to perform, and it gives you flexibility for training, storage, and readiness.
PROMAG RUGER SR40 is built to be a dependable, budget-friendly replacement magazine for Ruger SR40 owners. Constructed from heat-treated blued steel with components molded from Technapolymer, this magazine combines a metal body for structural integrity with polymer parts that resist wear and corrosion. The antifatigue spring is designed to help keep the magazine loaded and ready for years, and at $20.99 it’s an economical way to increase redundancy in your kit. Shop this product
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Build Quality and Materials
Heat-treated blued steel: The body’s heat treatment and blued finish improve resistance to impact and surface wear, which is important for magazines that spend time in pouches or packed gear.
Technapolymer components
Polymer feed lips and baseplate reduce weight and help prevent dents or deformation that can cause feeding issues. Technapolymer maintains dimensional stability across temperature swings encountered in outdoor use.
Antifatigue spring
The antifatigue spring is a key selling point: its design resists loss of tension over repeated cycles, helping the magazine retain reliable spring pressure during long storage or high-round-count training sessions.
Practical Use & Compatibility
PROMAG RUGER SR40 is intended specifically for the Ruger SR40 platform; the listing notes “Various” models under Promag’s catalog. That makes it a practical spare for daily carry owners and range shooters who want a rugged, low-cost backup. While specific calibers are not listed for this part, its fit-for-purpose construction addresses the common failure points seen in aftermarket magazines.
Field maintenance is simple: keep the steel body clean and lightly oiled, inspect the Technapolymer parts for cracks, and rotate magazines into service periodically to verify spring tension.
For an inexpensive, well-built spare that addresses both durability and long-term spring life, PROMAG RUGER SR40 is a solid choice at $20.99. View product details and pricing on the shop page and confirm compatibility with your specific SR40 model before purchase. Check current 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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