The Tyrant CNC Springfield Hellcat/Pro Magazine Extension is a high-quality upgrade for your Springfield Hellcat or Pro. This extension increases the capacity of your magazine by adding an extra 3 rounds of 9mm, allowing you to carry more ammunition and spend less time reloading. Made from durable 7000 series aluminum, CNC machined for precision and finished with a bead blast and hardcoat anodized finish, this extension is built to last and withstand the rigors of everyday use. By utilizing the existing OEM spring that came with your firearm, this extension ensures that it will function seamlessly with your Hellcat or Hellcat Pro, providing a reliable and consistent performance. This eliminates the need for any additional adjustments or modifications to your firearm, making the installation process quick and easy. Features : Aluminum Construction Adds 3 Rounds of 9mm NoBak Technology Uses OEM Spring Fits Springfield Hellcat/Hellcat Pro Magazines, Excluding 10-round