Tyrant CNC Magazine Extension Features The Tyrant CNC Magazine Extension instantly adds 6 rounds of 9mm capacity or 5 rounds of .40 caliber capacity to magazines compatible with the Glock 17 19X 22 34 35 and 45. CNC machined from aerospace grade aluminum the extension adds a bit of extra weight to the base pad helping the magazine drop free quickly and consistently during reloads under pressure. The included new power spring is tuned to maintain reliable feeding across the magazine s extended capacity rather than relying on the factory spring alone. This combination of added capacity and dependable function makes the extension a practical upgrade for competition shooters and home defense users alike. Beyond the capacity increase the extension provides added control and increased purchase on the base of the magazine which helps with faster more confident magazine changes. Smooth chamfered edges prevent the extension from snagging on clothing or gear during the draw or during a reload. Installation and removal require no tools keeping the upgrade process quick and accessible for any Glock owner. The extension does not work with Pmags or 10-round magazines so it is intended specifically for standard-capacity factory magazines and finished in matte black the Tyrant CNC Magazine Extension is available for sale at GrabAGun. Tyrant CNC Magazine Extension Specifications Manufacturer: Tyrant CNC Model: +6/5 Mag Extension Compatible Hosts: Glock 17 / 19X / 22 / 34 / 35 / 45 Color: Black Material: Aluminum Finish: Matte Capacity Increase: +6 (9mm) / +5 (.40) Length: 1.15 Weight: 1.30 oz Caliber: 9mm Available At: GrabAGun