Magpul PMAG GL9 Detachable 21 Rounds 9mm for Glock 34/17/26/19/45, Black

The Magpul PMAG 21 GL9 is a competition-ready, extended-capacity 9mm handgun magazine engineered specifically for double-stack Glock platforms. Meeting the 140mm overall length requirement for competitive shooting, it delivers a true 21-round capacity without the need for costly aftermarket extensions. Built from Magpul’s proprietary high-strength polymer, it offers exceptional impact resistance, stiffness, and lightweight handling while maintaining flawless performance over thousands of rounds. The controlled-tilt, high-visibility follower ensures smooth feeding, paired with a long-life stainless steel spring for consistent tension and corrosion resistance. Dual capacity indicator windows allow for fast round-count checks, while the flared, removable floorplate improves handling, rapid disassembly, and maintenance. Designed to drop free whether loaded or unloaded, the PMAG GL9 integrates ridged floorplate edges for secure grip and a paint pen dot matrix for quick magazine identification. Compatible with full-size, compact, and sub-compact double-stack Glock 9mm variants, this magazine is equally at home in defensive carry, competition, and tactical roles.

Key Features:

• Capacity: 21-round design for extended firepower
• Competition Length: Meets 140mm overall length requirement
• Construction: Proprietary impact-resistant polymer body
• Feeding System: Controlled-tilt high-visibility follower for reliable cycling
• Spring: Long-life stainless steel for consistent feed and corrosion resistance
• Compatibility: Works with all double-stack Glock 9mm full-size, compact, and sub-compact pistols
• Indicator Windows: Dual round-count windows for quick capacity checks
• Floorplate: Flared, easily removable design with ridged edges for enhanced handling
• Identification: Integrated paint pen dot matrix panel for quick load labeling
• Drop-Free Operation: Releases cleanly loaded or unloaded
• Application: Suitable for tactical, defensive, and competition use
• Caliber: 9mm Luger (9x19mm Parabellum)
• Platform: Glock double-stack full-size, compact, and sub-compact handguns
• Overall Length: 140mm competition standard
• Capacity: 21 rounds
• Material: High-strength polymer body
• Follower Type: High-visibility controlled-tilt design
• Spring Material: Stainless steel for extended service life
• Finish: Matte black
• Indicator Windows: Transparent on both sides of magazine body
• Floorplate: Flared and tool-less removable for cleaning
• Grip Features: Ridged edges for positive control during reloads
• Marking Panel: Paint pen dot matrix for magazine identification
• Weight: 0.106 lbs 

SKU: 114308
UPC: 840815109709