SIG lists the P365X at 5.8" long, 4.8" tall, and 1.1" wide. It weighs 17.8 oz with a magazine. Glock lists the G43X MOS at 6.50" long, 5.04" tall, and 1.10" wide. It weighs 18.55 oz with an empty magazine.

In plain terms, both guns are equally slim, so neither one prints wider on your waist. The P365X is a bit shorter and a bit lower, which makes it easier to hide under a light shirt. The G43X is a touch bigger, and that extra length gives you a slightly longer barrel and more distance between the sights. That small size gap matters less than how many rounds each gun gives you.

Winner: P365X

Capacity is closer than most people expect. The P365X holds 12 rounds in a flush-fit magazine, which is a lot for a gun this small. The G43X can now run a 15-round flush-fit magazine, so you get three more rounds without anything sticking out past the grip. Both guns stay just as slim, and neither one needs an extended magazine to hit its number. For anyone who wants the most rounds in a flush, easy-to-hide setup, the G43X takes this one.

Winner: G43X

Both guns are optic ready in their common versions. The P365X slide is cut for a compact footprint, and the G43X MOS takes Shield RMSc footprint optics directly with no adapter plates. You can run a micro red dot on either one without a bulky mount.

Grip is where the platforms split. The P365X uses a removable fire control unit, so you can move it into a different grip module without buying a new gun. The G43X frame is the serialized part, so its grip stays as it is. Plenty of shooters still prefer the Glock feel and controls. Whichever grip you choose, both guns open up once you start building on them.

Winner: P365X

No matter which one you carry, we offer plenty of ways to make it your own. Our threaded and non-threaded barrels are built for accuracy and long-term reliability. A threaded barrel lets you keep a thread protector on for daily carry, or swap on a micro comp or suppressor when you want one. Our slides give you a cleaner look and better optic options, and our compensators help keep the gun flatter and your sights on target with less muzzle rise. Whether you want a simple barrel swap or a full build, both platforms have room to grow.

Winner: Tie

For most people who carry every day, we recommend the P365X. It is a little smaller, it is easier to hide, and it lets you change grip modules as your needs change. The G43X is close behind, though. It holds 15 rounds flush, it has a slightly longer barrel and sight radius, and it uses the Glock layout so many shooters already know. Whichever one you pick, you are getting a great carry gun, and we still love building on both.

Glock®, SIG Sauer®, and other marks are the property of their respective owners. True Precision is not affiliated with these manufacturers.