Volquartsen Extended Magazine Release for MKIV 22/45- Our new Extended Magazine Release for the MKIV allows magazines to sit a little higher for better and more reliable feed. This improves feeding by preventing the bolt from sliding over and missing the round in the magazine. It's also knurled for both aesthetics and feel. Our release will work with the factory magazines however due to magazine being raised, it is highly recommended the Magazine Release be used in conjunction with our Magazine Base Pads. Please note that when our release is used with factory magazines and base pads that the magazine will sit just past flush on the bottom of the frame.