Sep 23, 2021 · The P365 originally held 10 rounds, but Sig released a 12-, then a 15-round magazine in short order. All the mags. The 12-round magazine is my personal favorite and offers substantial ammunition with a slight extension that gives me a better grip on the gun.
Mar 11, 2021 · SIG’s modified double-stack magazine design makes this level of firepower possible in such a small pistol. If 10 rounds are not enough, though, SIG also offers both 12- and 15-round magazines as accessories for the P365, including the SAS model, giving this pocket-sized pistol full-sized pistol capacity.