Magpul PMAG 21 GL9 21-Round Polymer Magazine for Glock 9mm Double-Stack Pistols MAG661-BLK

Product Description

The Magpul PMAG 21 GL9 is a 21-round 9mm handgun magazine designed for double-stack Glock pistols, delivering reliable feeding and long-term durability through a proprietary all-polymer body. Built to meet 140mm competition magazine overall-length requirements, it provides added capacity without the cost or complexity of aftermarket extensions. Features like a high-visibility controlled-tilt follower, stainless steel spring, and easy-to-remove floorplate help ensure consistent performance and simplified maintenance, while capacity windows and a paint-pen dot matrix make round count checks and magazine identification fast and intuitive.

Product Highlights

• 21-round extended-capacity Glock 9mm magazine that meets 140mm competition length requirements
• Proprietary all-polymer construction engineered for durability and dependable feeding over thousands of rounds
• High-visibility controlled-tilt follower and long-life stainless steel spring for consistent cycling
• Capacity indicator windows (10, 15, and 21 rounds) plus paint-pen dot matrix for easy mag/load identification
• Flared, removable floorplate with ridged edges for improved grip and easier disassembly/cleaning

Specs

• Brand Name: Magpul Industries
• Model: PMAG 21 GL9
• Manufacturer Part Number: MAG661-BLK
• UPC: 840815109709
• Color: Black
• Caliber: 9mm Luger
• Magazine Capacity: 21 rounds
• Compatibility: Full-size, compact, and sub-compact double-stack Glock 9mm variants (magazine protrudes below grip)
• Body Material: Polymer
• Spring Material: Stainless steel
• Follower: High-visibility controlled-tilt
• Floorplate: Flared, removable; ridged edges for improved grip
• Round Count Windows: 10 / 15 / 21-round indicators
• Country of Manufacture: USA

Disclaimer: We strive to provide accurate and up-to-date product descriptions, specifications, and images; however, errors or omissions may occasionally occur. We are not responsible for any inaccuracies or discrepancies in the content provided. If you notice anything incorrect or unclear, please contact us so we can correct it. When in doubt, we recommend verifying details directly with the product’s manufacturer.