XTech Tactical Hellcat 9mm 0 for 10 Round Grip Extension for Springfield Mag Black 10. In "free" states gun owners have access to higher-capacity magazines which are not available in restricted states. We've solved that problem for you with our grip extension for the Springfield Hellcat 10-round magazines. Our hellcat pinky extension for the 10-round Springfield magazines allows you to achieve full support and an ideal grip on the pistol. It installs just like the factory baseplate and is secured by the magazine spring. Specifications for XTech Tactical Hellcat 9mm 0 for 10 Round Grip Extension for Springfield Mag: Manufacturer: XTech Tactical Color: Black Caliber: 9mm Luger Gun Make: Springfield Armory Gun Model: Springfield Armory Hellcat Magazine Capacity: 0 Round Package Contents: XTech Tactical Hellcat 9mm 0 for 10 Round Grip Extension for Springfield Mag What firearm models does the manufacturer say XTech Tactical Hellcat 9mm 0 for 10 Round Grip Extension for Springfield Mag is compatible with? The manufacturer suggests that XTech Tactical Hellcat 9mm 0 for 10 Round Grip Extension for Springfield Mag is compatible with Springfield Armory HellcatXTech Tactical XT3045001: Hellcat 9mm 0 for 10 Round Grip Extension for Springfield Mag Black 10