ZEV Technologies Glock 17 9mm Luger +5 Round Pistol Magazine Extension Red 5. ZEV Technologies went with a 3-piece design for these Pistol Magazine Extensions making them easy to install and easy to disassemble for cleaning without losing any parts. The ZEV Technologies ZEV Plus 5 Extended Mag Basepad has a flared base and texturing to make it easier to get a secure consistent grip for more accuracy when you shoot. Use the ZEV Technologies ZEV Plus 5 Extended Basepad for Glock OEM Magazine for faster and less frequent reloading at competitions or at the range. Specifications for ZEV Technologies Glock 17 9mm Luger +5 Round Pistol Magazine Extension: Manufacturer: ZEV Technologies Fabric/Material: Aluminum Magazine Capacity: 5 Round Caliber: 9mm Luger .40 S&W Gun Make: Glock Gun Model: Glock 31 Glock 17 Glock 17L Glock 31C Glock 22C Glock 24C Glock 17C Glock 35 Glock 34 Glock 24 Glock 22 Condition: New Gun Type: Pistol Features of ZEV Technologies Glock 17 9mm Luger +5 Round Pistol Magazine Extension Adds +5 9mm capacity Fits standard capacity GLOCK 9mm magazines 3-piece design is easy to reassemble without damaging the mag body Additional power spring provided NOTE: Basepads are intended for use with 17 round magazines. Package Contents: ZEV Technologies Glock 17 9mm Luger +5 Round Pistol Magazine Extension Basepad Assembly (3 pieces) Extra Power Magazine Spring What firearm models does the manufacturer say ZEV Technologies Glock 17 9mm Luger +5 Round Pistol Magazine Extension is compatible with? The manufacturer says that ZEV Technologies Glock 17 9mm Luger +5 Round Pistol Magazine Extension is compatible with Glock 31 Glock 17 Glock 17L Glock 22 Glock 24 Glock 34 Glock 35 Glock 24C Glock 17C Glock 22C Glock 31CZEV Technologies BPAD-EXT-GLK-5-R: Glock 17 9mm Luger +5 Round Pistol Magazine Extension Red