Reliable magazines are the backbone of any defensive rifle setup. For operators who demand consistent feeding, corrosion resistance and a construction that survives hard use in the field, material selection and internal components matter as much as capacity.

PROMAG DPMS LR-308 is a 308 Winchester 20rd magazine designed specifically to fit DPMS LR308 and SR25 rifles. The magazine body is constructed of heat treated steel with a black phosphate finish for durability under harsh use in the field. A Chromesilicon wire spring and precision molded polymer follower ensure reliable feeding and function. Shop this product

Performance and construction

The heat treated steel body resists deformation from drops and repeated loading cycles—important when magazines see heavy rotation or are carried in pouches. The black phosphate finish adds a proven layer of corrosion resistance and reduces surface glare during handling. Internally, the Chromesilicon wire spring delivers consistent tension across the full 20-round stack, while the precision molded polymer follower keeps rounds aligned for positive, wobble-free feeding.

Why those features matter

For defensive applications, a stiff, heat-treated body maintains dimensional integrity under stress, preventing feed lip spread that can cause double feeds or failures. The black phosphate finish is a practical field choice, protecting steel from sweat, salt and moisture without adding brittle coatings. Chromesilicon springs hold their tension longer than generic springs, and a properly shaped polymer follower reduces hang-ups and nose-dives during rapid follow-up shots.

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Compatibility, caliber and use cases

The PROMAG DPMS LR-308 is built for .308 Winchester rifles that use the LR-308 / SR25 pattern. .308 Winchester remains a common defensive and precision cartridge thanks to its balance of terminal performance and long-range capability. The 20-round capacity offers a middle ground between compact carry and sustained engagement scenarios, making this magazine suitable for range work, training and defensive setups where reliability is prioritized.

Price and final considerations

At $21.59, this magazine offers an affordable, purpose-built option for owners of LR-308 and SR25 pattern rifles who need durable magazines without premium pricing. Routine maintenance—light cleaning and inspection of the spring and follower—keeps feeding consistent over service life. Clicking the links will take you to our shop page where you can view availability and complete the purchase through the retailer.

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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.