When upgrading a classic submachine gun, the right magazine is as much about authenticity as it is about function. Drum magazines deliver iconic presence and increased capacity while preserving the period-correct look that many collectors and operators prize. Whether you’re outfitting a display piece or building a historically faithful shooter, attention to original specifications matters.
THOMPSON SMG
These authentic U.S.-manufactured drum magazines reproduce the original dimensions and feel. Each drum ships with a drum installation device (third hand) and a Thompson manual, simplifying installation and preserving proper operation. Shop this product here
Authenticity and build details
The THOMPSON SMG drums are made in the United States to exact original specifications. The 10- and 50-round drums share a 6.75″ diameter, while the 100-round drum measures 8.75″ across. That dimensional fidelity ensures reliable fit and the unmistakable visual profile collectors expect. These drums are designed to work in most full-auto models, making them suitable for period-correct reproductions and practical suppressed or unsuppressed builds where legal and safe to operate.
HWK XL 5.56 Giveaway
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A third-party retailer is currently hosting a giveaway for an HWK XL 5.56 pistol package (≈ $1,800 retail value).
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Installation and compatibility
Included tooling and documentation
Every drum is shipped with a drum installation device—often called a third hand—and a Thompson manual. These items decrease installation time, reduce the chance of damage during fitting, and provide clear guidance for safe operation. The drums are compatible with many full-auto Thompson variants; confirm model-specific fit before purchase.
Why choose these drums for your build
Beyond capacity, drums change balance and handling. The 50- and 100-round options create a distinct center-of-mass shift compared to stick magazines, which affects mount choices and sling setups. For reenactors and range users focused on authenticity, the exact U.S.-manufactured construction is a decisive benefit. Price is $283.99, reflecting the manufacturing fidelity and included installation kit.
For a closer look at specifications and to verify fit for your model, View product details and pricing.
When sourcing period-accurate drums built to original specs, the THOMPSON SMG drums offer proven dimensions, included installation tooling, and widespread compatibility. Check current availability and secure your set through the shop page to complete a historically faithful build or add an authentic centerpiece to your collection: 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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