Promag Glock 17 9mm 20rd Poly Black

The ProMag Glock 17 9mm 20rd Poly Black magazine is a purpose-built polymer feeding solution engineered for law enforcement, military, and civilian operators who demand reliable magazine performance in high-round-count scenarios. Built on decades of firearms engineering, this 20-round capacity magazine extends your Glock 17's combat effectiveness without significantly altering ergonomics or handling characteristics.

Manufactured in the USA, ProMag magazines utilize precision-wound, heat-treated chrome silicon wire springs that maintain consistent feed pressure across thousands of cycles. The polymer construction reduces weight while maintaining structural integrity, and each assembly stage undergoes rigorous quality control to ensure zero-defect magazine performance. The 20-round capacity balances practical reloading intervals with magazine footprint, allowing operators to maximize ammunition availability without excessive bulk or weight penalty.

This magazine is fully compatible with all standard Glock 17 platforms and Gen 1–5 variants, making it an ideal backup or training mag for duty shooters and enthusiasts alike. ProMag backs every magazine with a lifetime guarantee against manufacturer defects, reflecting confidence in material durability and assembly standards. Law enforcement agencies value the extended capacity and reliability of this magazine in various operational contexts.