DuraMag Speed Magazine AR-15 223 Remington 300 Blackout 20-Round Aluminum Black

The DuraMag Speed Magazine is a 20-round aluminum magazine for AR-15 rifles, offered in 223 Remington, 5.56x45mm NATO and 300 Blackout. Its body is machined from 6061-T6 aluminum and finished in black Type III hard-coat anodizing, which is applied as part of the metal itself rather than as a surface coating.

Because the body is aluminum, it resists flexing and swelling and is suited to extended storage while loaded, unlike polymer magazines. The listing describes the magazine as built with progressive die tooling, a post and hole design, and robotic welding for consistent production.

The magazine is listed for use with AR-15 platform rifles chambered in the calibers noted above.

• Platform: AR-15
• Capacity: 20 rounds
• Calibers: 223 Remington, 5.56x45mm NATO, 300 Blackout
• Material: 6061-T6 aluminum
• Finish: Type III hard-coat anodized
• Color: Black
• Construction: Progressive die tooling, post and hole design, robotic welding