DuraMag builds this Speed-series magazine (part no. 2023005175CPD) to run in any AR-15 pattern rifle, with a lightweight aluminum body dual-marked for .300 AAC Blackout and .223 Remington/5.56 NATO. Since both cartridges share the same case dimensions, the single magazine feeds either chambering without modification, which is a real convenience for owners who run more than one upper on the same lower. Finished in blue anodizing for quick visual identification, it stands out from the sea of black GI-pattern magazines in a range bag or mag pouch. This DuraMag magazine is a straightforward, durable spare for any AR-15 magazine rotation.

Key Specifications

• Holds 20 rounds, a compact capacity that works well for a truck gun or a state with capacity limits.
• Dual-marked for .300 AAC Blackout and .223 Remington/5.56 NATO, since the two cartridges share the same case body.
• Fits the AR-15 platform and its direct variants.
• Built with an aluminum magazine body for a lighter feel than steel GI mags.
• Finished in blue anodizing for a distinct look in a mag pouch.
• Part of DuraMag’s Speed lightweight magazine line.
• A detachable box magazine, dropping free for fast reloads.

Frequently Asked Questions

Does this magazine work with 5.56 NATO ammunition? Yes, it is dual-marked for .300 AAC Blackout and .223 Remington/5.56 NATO, which share the same case dimensions.

What rifles does this magazine fit? It is built for the AR-15 platform and direct variants.

Buy the DuraMag Speed AR-15 20-Round Magazine

A lightweight aluminum spare in a distinctive blue finish, this DuraMag Speed magazine keeps a 20-round backup ready for either .300 Blackout or 5.56 uppers. Order it from our Lubbock, Texas gun shop for fast, insured shipping.