Tyrant CNC Magazine Extension Features The Tyrant CNC +3 Magazine Extension adds three additional rounds of 9mm capacity to a Springfield Hellcat or Hellcat Pro magazine giving the shooter more rounds between reloads for competition hunting or self defense use. It is machined from 7000 series aluminum for strength and finished with a bead blast and hardcoat anodize that holds up to repeated use and dropping. The extension uses the magazine s existing OEM spring rather than requiring a replacement power spring so function remains consistent with the factory setup the pistol shipped with. This also means installation does not require any additional parts beyond the extension itself. Tyrant CNC s NoBak springer plunger technology locks the extension securely onto the magazine body keeping it in place even if the magazine is dropped or subjected to hard use during training or competition. Installation and removal require no special tools and no modification to the firearm making this an easy upgrade for any Hellcat or Hellcat Pro owner. The extension s sleek profile blends with the factory lines of the pistol rather than adding noticeable bulk to the grip. Note that this extension does not fit the 10 round factory magazines so it is intended specifically for owners running the standard capacity Hellcat magazines looking for more rounds on tap. Tyrant CNC Magazine Extension Specifications Manufacturer: Tyrant CNC Model: Magazine Extension Compatible Hosts: Springfield Armory Hellcat Hellcat Pro Color: Black Material: Aluminum Finish: Anodized Capacity Increase: +3 Rounds Caliber: 9mm Available At: GrabAGun