DURAMAG SS™ 400 Legend Magazine

Purpose-Built Performance for a Legendary Caliber

The DURAMAG SS 400 Legend is the only magazine specifically engineered for the powerful .400 Legend cartridge—because legendary calibers deserve legendary reliability. Designed for use with AR-15 pattern rifles, this magazine features caliber-specific internal geometry, ensuring flawless feeding, optimal cartridge stacking, and dependable performance in any shooting scenario.

Crafted from durable 410 stainless steel and finished with our proprietary T-360™ coating, the 400 Legend DURAMAG SS is built to thrive in even the harshest conditions. Unlike polymer magazines, it won’t flex, swell, or degrade over time—making it safe for long-term loaded storage without compromise.

Each magazine is clearly marked with “400 Legend” on both the body and the follower for quick, easy identification. Available in 5-round and 10-round capacities, this is the magazine trusted by serious shooters who demand unwavering performance and rugged durability.

Key Features:

• Purpose-built for the .400 Legend cartridge

• AR-15 pattern magazine with 5rd and 10rd options

• Precision-shaped 400 Legend-specific rib geometry for flawless feeding

• Constructed from 410 Stainless Steel for maximum strength

• Finished with T-360™ coating for corrosion resistance and smooth operation

• Marked body and follower for easy caliber ID

• Safe for extended loaded storage—no swelling, no flexing

• Designed for serious shooters demanding unmatched reliability

When performance matters, trust DURAMAG SS™ 400 Legend—engineered to feed your legend.

Caliber	.400 Legend
Platform	AR-15
Material	410 Stainless Steel
Finish	T-360™ Coating
Capacity Options	5 Rounds, 10 Rounds
Feed Geometry	400 Legend-Specific Rib Geometry
Markings	Caliber Marked on Body & Follower
Storage	Safe for Long-Term Loaded Storage
Flex Resistance	Will Not Flex or Swell Like Polymer
Compatibility	AR-15 Pattern Rifles (400 Legend)
Durability	Corrosion-Resistant, Impact-Resistant