FEATURES -17 round -Compatible with all full-size, compact, and sub-compact 9mm Glock handguns* -Durable, lightweight, & 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 & identification -Full magazine indicator windows on both sides of body -Drops free loaded or unloaded *Note: May not be compatible with other platforms designed for use with Glock magazines due to a wide range of magwell designs & tolerances. DISCLAIMER: This product is not manufactured, authorized, endorsed, or warranted by GLOCK. GLOCK does not warrant or represent that this product is compatible with GLOCK pistols.