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The .400 Legend cartridge demands more from your magazine than standard AR platforms can deliver. The straight-walled case and larger diameter don't stack properly in conventional designs, leading to feeding problems and misalignment. DuraMag engineered this magazine from the ground up to handle those challenges with precision geometry built specifically for the .400 Legend round.
Instead of forcing a workaround with modified magazines, this DuraMag SS delivers purpose-built construction. Inside the 410 stainless steel body, you'll find an Advanced Geometry Follower that stays level for consistent cartridge presentation, paired with an EverFlex anti-fatigue spring designed for long life and real reliability. The LipLock technology keeps rounds secured and aligned as they move through the feed cycle. These aren't gimmicks—they're solutions engineered to address the unique demands of a powerful straight-walled cartridge.
Built from premium 410 stainless steel with DuraMag's proprietary T-360 coating, this magazine resists corrosion and maintains its integrity through tough use. Unlike polymer alternatives that can flex, swell, or warp with temperature changes and loaded storage, stainless steel won't shift dimensions on you. The magazine body is marked with "400 Legend" on both the body and follower for quick identification in the field. The 5-round capacity works well for hunting applications and gives you a compact profile that doesn't snag when moving between positions.
The internals matter just as much as the exterior. The anti-tilt AGF follower, chrome-plated spring, and caliber-specific rib geometry work together to eliminate the binding and binding issues that plague standard magazines with this cartridge. Field reports show these magazines feeding reliably without the hang-ups and misfeeds that early .400 Legend users experienced with makeshift solutions.
The .400 Legend's straight-walled case and larger diameter don't feed reliably from conventional magazine geometry. Standard .223/5.56 magazines cause the rounds to sit at incorrect angles, leading to feeding hang-ups and cartridge misalignment. This DuraMag SS was engineered with .400 Legend-specific rib geometry to ensure proper cartridge stacking and reliable feeding.
Yes. DuraMag constructed this magazine from stainless steel specifically to avoid the flexing and swelling that polymer magazines experience when stored loaded or exposed to temperature changes. The stainless construction maintains its dimensions through harsh conditions and long-term storage.
The DuraMag SS uses premium 410 stainless steel with a T-360 protective coating, advanced geometry follower, EverFlex spring technology, and LipLock design. These work together to deliver smooth, consistent feeding for tricky cartridges like .400 Legend. The proprietary geometry is caliber-specific, not a generic one-size-fits-all approach.
These magazines are engineered specifically for .400 Legend. While some users have reported limited cross-compatibility with similar cartridges like .338 ARC, they're designed and tested for .400 Legend performance. Using them with other calibers may result in feeding issues.
| UPC | 766897411472 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | 5X40041172CPD |
| Caliber/Gauge | .400 Legend |
| Capacity | 5 |
| Length | 4.6500 |
| Product Type | Magazine |
| Model | |
| Color | Black |
| Quantity | 1 |
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