Promag Ar15 5.56 Rllr 40rd St Bl Ply

The ProMag AR15 5.56 40-round steel and polymer magazine delivers proven reliability for modern sporting rifle platforms and tactical applications. Built with precision-wound chrome silicon springs and reinforced polymer construction, this 40-round capacity magazine is engineered to handle extended range sessions, competitive shooting, and field deployment without compromise. ProMag's lifetime manufacturer guarantee stands behind every unit, reflecting decades of confidence in domestic production standards.

The steel and polymer hybrid design provides rigidity where it matters most—the feed lips and witness holes—while maintaining a practical balance between durability and weight. The 40-round capacity accommodates shooters who require higher round counts without the complexity of stacking multiple 30-round magazines during extended range days. Each magazine undergoes multi-step quality verification during assembly, ensuring consistent feed reliability across thousands of duty cycles. The witness holes allow rapid capacity verification at a glance, a critical feature for operators managing multiple magazines in the field.

This ProMag 40-round magazine serves shooters pursuing longer training blocks, competitive multi-stage events, and tactical scenarios where reload frequency directly impacts performance. The extra capacity reduces administrative burden during intensive practice, allowing focus on marksmanship and technique. Sized at 5.5 x 2 x 15.25 inches and weighing 0.75 lbs when loaded, the magazine maintains practical maneuverability in standard issue pouches and carriers. The steel and polymer magazine platform has proven compatible across AR15 platforms chambered in 5.56 NATO, making it a versatile addition to any operator's magazine rotation.