The PMAG 27 GL9 GLOCK is a 27-round Glock 9mm magazine featuring proprietary all-polymer construction for flawless reliability and durability over thousands of rounds. Meeting the overall length requirements for a 170MM competition magazine, the PMAG 27 GL9 offers additional capacity without the need for expensive extensions.Includes a high visibility, controlled-tilt follower, a stainless steel spring, and an easily removable floorplate for cleaning. Also includes a paint pen dot matrix for magazine marking, ridged floorplate edges for better grip, and capacity indicator windows. Drops free when loaded or unloaded.The PMAG 27 GL9 is compatible with all full-size, compact, and sub-compact double-stack Glock 9mm variants with some protrusion below the grip. Specifications for Magpul Industries PMAG GL9 Glock 19 9mm Luger 27 Round Pistol Magazine: Manufacturer: Magpul Industries Gun Make: Glock Gun Model: Glock 17, Glock 19 Caliber: 9mm Luger Magazine Capacity: 27 Round Color: Black Quantity: 1 Pack Condition: New Fabric/Material: Polymer Features of Magpul Industries PMAG 21 GL9 Glock, 9mm Luger, 27 Round Rifle Magazine Durable, lightweight, and rigid polymer construction Drops free when loaded or unloaded Dot matrix panel for magazine marking and identification Full magazine indicator windows on both sides of body at 10, 15, 20, and 27 rounds remaining Flared, easily removable floor plate Long-life stainless steel spring for corrosion resistance High visibility, controlled-tilt follower Package Contents: Magpul Industries PMAG GL9 Glock 19 9mm Luger 27 Round Pistol Magazine Which weapon models is Magpul Industries PMAG GL9 Glock 19 9mm Luger 27 Round Pistol Magazine compatible with? Magpul Industries PMAG GL9 Glock 19 9mm Luger 27 Round Pistol Magazine is compatible with Glock 19, Glock 17