This is the Magpul PMAG 21 GL9 9mm 21-round magazine for G17, 19, 19X, 26, 34, and 45 pistols.

FEATURES

• Compatible with all full-size, compact, and sub-compact 9mm double-stack Glock handguns
• Durable, lightweight, and extremely stiff polymer construction
• High visibility controlled-tilt follower
• Long-life stainless steel spring for corrosion resistance
• Flared, easily removable floor plate
• Dot matrix panel for magazine marking and identification
• Magazine indicator windows on both sides of the body at 10, 15, and 21 rounds remaining
• Drops free loaded or unloaded
• Made in the U.S.A.

The PMAG 21 GL9 is a 21-round 9mm handgun magazine featuring a new proprietary all-polymer construction for flawless reliability and durability over thousands of rounds. Meeting the overall length requirements for a 140MM competition magazine, the PMAG 21 GL9 offers additional capacity without the need for expensive extensions.