What is the Keel Principle of Holsters?

Guns with short muzzles can be top-heavy and difficult to conceal comfortably. To solve this, some holsters have extra length added to the muzzle end. If you’re carrying a longer-muzzled gun or a revolver, adding extra length may not be necessary for you, but for short semiautomatic guns, it’s often very helpful.

For many body types, longer holsters balance better, making them more comfortable and easier to conceal. This is especially true if you have a bit of a belly – that tends to push the grip out more and make the muzzle dig in. Longer holsters also work better with holster wedges.

Note that while extra muzzle length reduces grip printing, it can increase muzzle printing, which can be a concern with lower carry positions and tight fitting pants such as leggings or yoga pants. Longer holster length can also get in the way if your goal is deep carry — carrying at or below the waistband.