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Duramag makes magazines the old-school way: from aluminum instead of plastic. This particular 20-rounder gets its durability and finish from 6061-T6 aluminum, which is robotically welded and then hard-coat anodized for long-term resistance to wear. The gray color isn't just a coating on the surface—it's chemically integrated into the metal itself during the Type-III anodizing process, so it won't chip or scratch away.
The 20-round capacity in aluminum is practical if you're running .300 Blackout in a shorter platform or compact build. Aluminum won't swell or flex like polymer mags can, which matters if you're storing them loaded or running them in temperature swings. The feed lips are designed with LipLock technology to keep rounds aligned properly, and the anti-tilt follower tracks straight during loading and feeding.
Everything on this magazine—from the spring to the welding process—is made to work the same way every single time. The EverFlex spring is designed to maintain tension even with indefinite loaded storage. The body uses progressive die tooling and Post and Hole construction to eliminate flex or expansion. Inside and out, the T-360 coating keeps things running smooth and resists corrosion. The net result is a magazine that feeds reliably whether you're shooting clean or dirty rounds, and can handle being dropped or stepped on without losing its lunch.
Yes. This magazine is designed to function with .300 AAC Blackout, .223 Remington, and 5.56 NATO. The LipLock feed lips and anti-tilt follower keep rounds properly aligned for consistent feeding, even with the heavier and longer bullets typical of subsonic .300 Blackout loads. Many users report reliable performance with both supersonic and subsonic ammunition.
The gray finish is integrated into the metal through Type-III hard-coat anodizing—it's not a coating on top. This means the color is part of the aluminum itself and won't chip or scratch away the way a painted or coated finish might. You may see small scuff marks from use and handling, but they won't expose bare metal underneath.
Yes. Duramag specifically designs their aluminum magazines for extended loaded storage without risk of swelling or flexing. The EverFlex spring maintains consistent tension over time, so you can load it and put it away for months or years without worrying about the spring wearing out or the mag warping like some polymer magazines can in temperature swings.
Aluminum won't flex or swell in heat or cold the way polymer can, which helps with reliability in extreme conditions. This Duramag is heavier than polymer, but many prefer the feel of metal-on-metal when inserting and ejecting from a metal magwell. The anodized finish also resists scratching better than polymer. The tradeoff is that aluminum mags weigh more, which matters if you're carrying multiple mags all day.
| UPC | 766897412080 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | 2023002175CPD |
| Caliber/Gauge | .300 AAC Blackout |
| Capacity | 20 |
| Color | Gray |
| Product Type | Magazine |
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