G17 Mag Extension.
These are the finest magazine extension on the market. Unlike other magazine extensions, no cutting is necessary with this one. They’re easy to install, made of durable metal, and provide a balance to the G17 by shifting the center of gravity downward on the handgun and extending its capacity. I’m retired military and former law enforcement and these are the most durable - highest capacity - finest magazine extensions on the market. I wish the government would give these magazine extensions a national stock number and offer them for issue. They’re part of my my EDC.