UTG Pro UTG Glock 17/18/19/19x/26/34/45 9mm 17 Round Polymer Magazine Black 17. The magazine is compatible with left or right-handed magazine releases and externally features left and right-side round count indicators and an easy to remove for maintenance base pad. Internals include a high visibility blue anti-follower and high longevity stainless steel spring for reliable feeding. Specifications for UTG Pro Glock 17/18/19/19x/26/34/45 9mm 17 Round Polymer Magazine: Manufacturer: UTG Pro Gun Make: Glock Gun Model: Glock 18 Glock 19X Glock 45 Glock 34 Glock 17 Glock 26 Glock 19 Caliber: 9mm Luger Magazine Capacity: 17 Round Color: Black Finish: Matte Fabric/Material: Polymer Package Contents: UTG Pro Glock 17/18/19/19x/26/34/45 9mm 17 Round Polymer Magazine What firearm models does the manufacturer say UTG Pro Glock 17/18/19/19x/26/34/45 9mm 17 Round Polymer Magazine is compatible with? The manufacturer suggests that UTG Pro Glock 17/18/19/19x/26/34/45 9mm 17 Round Polymer Magazine is compatible with Glock 19 Glock 26 Glock 17 Glock 34 Glock 45 Glock 19X Glock 18UTG Pro RBT-GL917-A: UTG Glock 17/18/19/19x/26/34/45 9mm 17 Round Polymer Magazine Black 17