Tyrant CNC Magazine Extension for Springfield Echelon Features The Tyrant CNC Magazine Extension is machined from T6061 aerospace grade aluminum and finished with bead blasting followed by a hardcoat anodize giving it a durable surface that resists wear while adding a distinctive gold look to the pistol. It fits directly onto the Springfield Armory Echelon 15 and 17-round magazines adding 5 rounds of 9mm capacity without affecting the gun s reliability or function. Tool-less installation and removal make swapping or servicing the extension quick a real advantage over extensions that require tools and are prone to coming apart on impact. The proprietary NoBak plunger technology keeps the extension locked securely in place even surviving drops from more than 10 feet with a fully loaded magazine. An included 10 percent power spring rated 110 percent stronger than the OEM spring with an added coil is engineered to reliably deliver the final round and maintain slide hold-back after the last shot fires. Solid top and bottom ledges on the extension make magazine changes faster and help free up a stuck magazine when handling is compromised. The extension does not fit the Echelon 10-round magazine since the 20-round magazine is simply a 17-round magazine with an OEM 3-round extender. Designed to match the rest of the Tyrant CNC lineup for the Echelon this Gold Magazine Extension is available for sale at GrabAGun for shooters building a cohesive high-capacity setup. Tyrant CNC Magazine Extension for Springfield Echelon Specifications Manufacturer: Tyrant CNC Model: Magazine Extension Type: Magazine Extension Caliber: 9mm Capacity Increase: +5 Rounds Compatible Hosts: Springfield Armory Echelon 15/17-Round Magazines Material: Aluminum Color: Gold Finish: Anodized Available At: GrabAGun