Magpul

• "10 round capacity
• Durable, lightweight and extremely stiff polymer construction
• Brings added capacity and Magpul reliability to standard, compact and sub-compact 9mm Glock handguns
• Designed with a high visibility controlled-tilt follower for a reliable feed
• Magazine indicator windows on both sides of body at 10-rounds remaining
• Use the paint pen dot matrix to easily identify your different loads when it's crunch time"

This magazine is a way to keep the G17 size glock everyone loves, but also meet restrictions on magazine capacity.