MagGuts 2 Conversion for Sig P365 Standard 12 Round Magazine (Not X/XL)

Haven’t had any malfunctions. Works as advertised. Good stuff. **UPDATE** 01/22/2026 Once I read the description, I decided to give the spring a chance and installed it in one of my 12-round mags for P365. After it cycled close to 100 rounds with no malfunctions, I installed the spring on my 4 other mags for P365 and tested them with close to 400 rounds of FMJ and 30 rounds of JHP. Again, zero malfunctions. The rounds loaded very smooth and easy, and I could fully avoid using Maglula to load each mag to capacity. What I did next was to leave all 5 of these 12-round mags fully loaded (each with 14 rounds of FMJ) for the total of a year and half, while I carried a different set up. A year and half later, I took the P365 to a range and shot all 70 rounds. No malfunctions. I reloaded the mags and proceeded to cycle a couple of more full FMJ loads followed by a box of JHP. Two of the 5 mags became part of my EDC. I have yet to encounter a single malfunction of any kind with the Corso MagGuts flat springs. I also seriously think that it would make perfect sense that Sig contracted Corso for making the spring the permanent feature of their P365 12-round mags. It’s a wonderful, reliable product that I encourage everyone to get.