For owners and operators of the Sig MPX platform, capacity and reliable feeding are top priorities when selecting a magazine. A high-capacity drum that fits the MPX can turn extended range sessions and training drills into efficient, uninterrupted time on target.
PROMAG MPX 50RD
Design and compatibility
The PROMAG MPX 50RD offers a 50-round capacity specifically engineered for the Sig MPX platform. Built in the USA, this Promag drum is described as a 9mm Luger magazine—making it a direct match for the MPX’s chambering. Its larger capacity reduces reload frequency for range days, competition runs, and tactical drills where sustained fire or fast follow-up strings are practiced.
HWK XL 5.56 Giveaway
No purchase necessary
Entry link emailed immediately
A third-party retailer is currently hosting a giveaway for an HWK XL 5.56 pistol package (≈ $1,800 retail value).
I track legit firearm & gear giveaways and share the official entry links when they go live.
Shop this product — clicking will take you to the product page where you can view specs and purchase options from the retailer.
Why 9mm Luger matters for the MPX
9mm Luger remains a practical choice for the MPX: it balances controllability, ammunition availability, and cost-per-round for high-volume shooting. A 50-round drum loaded with 9mm is ideal for training sessions that emphasize mag-change drills, speed shooting, and extended drills without the need to constantly swap magazines.
Field use and handling
The drum’s capacity shifts balance compared to standard box magazines; expect a different feel in handling and shouldering. For static drill work and range training, the PROMAG MPX 50RD minimizes interruptions. Operators should practice loading technique and retention, and check local laws for magazine capacity restrictions before purchase. Price is listed at $90.99, reflecting a budget-friendly upgrade for those seeking higher capacity.
View product details and pricing to confirm current availability and compatibility notes on the retailer page.
Maintenance and practical tips
Maintain the drum with routine disassembly for cleaning, use quality 9mm ammunition to reduce feeding issues, and inspect springs for wear after heavy use. As a Promag product with model variations, verify fit on your specific MPX model before use. The PROMAG MPX 50RD represents a cost-effective way to increase on-gun capacity for training and extended sessions.
Check current availability — follow the link to the shop page where you can complete your purchase through the retailer.
Want exclusive intel on gear drops & discounts?
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.
Ready to Get Started?
Experience the quality and performance that makes this product a top choice.
Leave a Reply
You must be logged in to post a comment.