Pearce Grip's Grip Extension replaces the magazine base plate, but retains all other factory components. It does not alter the capacity of the magazine and provides extra length for better control and comfort. This extension will not fit the Glock M29 magazine.These units replace the magazine base plate and retain all other factory components. They do not alter the capacity of the magazine and provide extra length for better control and comfort. This extension will also fit the Glock 30S. This extension will not fit the Glock M29 magazine. Features: These units blend with the contours and texture of the handgun giving a factory appearance They are made from high impact polymer and withstand drop tests at temperatures from -20 to 350 deg F They form the next logical finger positioning feature to provide control and comfort without sacrificing conceal ability