Description
Mec-Gar 20-Round 9mm Extended Magazine for Glock 17 / 34 / 45 / 47 – Green Follower
The Mec-Gar extended 20-round 9mm (9x19mm / 9x21mm) magazine for Full Size Glock handguns delivers unmatched capacity, smooth cartridge indexing, and high-duty mechanical reliability.
Built using Mec-Gar’s proprietary all-metal housing constructed from heat-treated carbon steel, this magazine bypasses standard polymer-encased designs. The housing features Mec-Gar’s signature Anti-Friction Coating, which eliminates surface drag inside the magazine well to ensure lightning-fast drop-free ejection while providing superior defense against rust, perspiration, and carbon buildup.
Cartridge presentation is controlled by a high-impact, high-visibility green polymer follower, providing fast visual confirmation of an empty chamber through the ejection port. Continuous upward pressure is provided by a heavy-duty high-tensile strength music wire spring engineered to withstand repeated full-capacity cycles. Importantly, this magazine **does not require replacing your factory original OEM magazine catch**.
The base features an extended high-impact black polymer pad that reliably expands cartridge capacity while adding additional gripping surface for the lower palm. This extension optimizes support hand ergonomics and muzzle control, making it ideal for practical shooting sports and tactical operations.
Firearm Compatibility:
- Compatible Models: Glock 17, Glock 34, Glock 45, Glock 47 (Gen 3, Gen 4, and Gen 5) and compatible clones engineered for Full Size Glock magazine pattern.
- Caliber: 9mm (9x19mm / 9x21mm).
Aftermarket Baseplate Restriction:
- BASEPLATE RESTRICTION: Due to the proprietary metal tube structure and retention mechanism, standard factory or aftermarket replacement Glock floorplates **are not compatible**.
Key Technical Specifications:
- Manufacturer: Mec-Gar.
- Caliber: 9mm (9x19mm / 9x21mm).
- Capacity: 20 Rounds (extended high-capacity).
- Body Build: Heat-treated carbon steel (proprietary metal construction).
- Finish/Coating: Anti-Friction Coating matte black.
- Follower: High-visibility green high-impact polymer.
- Spring: High tensile strength music wire.
- Basepad Architecture: Extended black polymer pad.
- Primary Application: Competition shooting, tactical/duty operations, target shooting.
Technical specifications
- Item code: MGG172003A
- Weight: 100 g
Compatibility
- Glock
















