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The Polymer80 .50 Beowulf AR-15 magazine features a heavy-duty, reinforced polymer body, with an innovative floorplate design that ensures this mag will consistently hold a full 10 rounds of .50 Beowulf. At the same time, this mag extremely strong - ready to take the knocks and bumps of competition shooting - AND also lightweight.
Most importantly, the Polymer80 team designed this magazine expressly for the unique size, shape, and characteristics of .50 Beowulf cartridge. It’s not a modified mag meant for a different round that was "lashed up" to sort of work for .50 Beowulf. When you lock one of these mags into your .50 Beowulf rifle’s magwell, you can be sure that it will deliver all 10 rounds reliably, without hang-ups, jams, or leaving you high and dry with a disabled rifle.