The addition of the Pearce Grips on my P-365 mags made a world of difference in the comfort and control of the pistol. The extended grip from the factory did not quite do the job because the little finger wanted to roll under the factory grip while shooting. With the Pearce Grip, it encompassed the entire finger and only added about 1/4 inch to the height of the pistol. Still concealable, yet more comfortable and controllable. With the trend to manufacture smaller pistols the grips have shrunk a bit, but with the Pearce Grips they add just enough to make the fit perfect! I have purchased many of them for other pistols, and Pearce is the first ond only source for me on the mag issue.