Duty holsters for Glocks: retention levels and light fit

A duty holster does a harder job than a concealment holster: it carries the pistol openly, on a belt that gets grabbed, in and out of vehicles, in the rain, with a light and a dot fitted, and it must give the pistol up in a fraction of a second to one person only. Retention is the whole subject, and after retention comes fit, because a holster is molded for one pistol with one light and one dot. This guide covers retention levels, the systems that provide them, fit, belts and mounts, plainclothes versions, and the law around carrying a pistol openly.

Retention levels

The levels count the things that must be defeated to take the pistol out. Level I is passive retention, the friction and shape of the holster, adjustable on most Kydex by a screw. Level II adds one active device, a lever, hood or button that must be released to draw. Level III adds a second active device, usually a hood over a lever. A few holsters are sold as Level IV with a third. Concealed carry uses Level I; open and uniformed carry uses Level II at minimum and Level III on most patrol belts, because a visible pistol invites a grab and the retention devices are what beat it.

The systems

The Safariland ALS is a lever behind the pistol, released by the thumb on the draw stroke, which locks the pistol at the ejection port; it is Level II alone and Level III with the SLS rotating hood or the ALS guard fitted over it. The SLS hood rotates forward under the thumb and is Level II alone, Level III with the ALS beneath it. Other makers use a hood, a thumb button or a trigger-guard lock that releases with the index finger. Whichever system, the release must be done the same way every time and must not be defeatable by pulling the pistol harder.

Fit by pistol, light and dot

A duty holster is molded for a specific pistol with a specific light: a 17 with a TLR-1 HL, a 45 with an X300 Turbo, a 19 with a TLR-7A. The light is what the holster locks around on most designs, so the wrong light means the pistol does not lock in or does not come out. Optic versions have a taller hood or a cut for the dot. Buy the holster by three names: pistol, light, dot. Gen 5 and Gen 4 pistols usually share a holster; Gen 3 fits most Gen 4 holsters. The 19X and 45 share a holster with each other and, when the holster is open at the muzzle, with the 17.

Belts and mounts

A patrol holster mounts to a 2.25 inch duty belt on a mid-ride or low-ride mount, with an inner belt and keepers holding it all to the trousers. Drop puts the grip below the hip so a vest does not block the draw; cant tilts the grip forward. A mid-ride is the usual start, a low-ride for a heavy vest, and a drop-leg for a plate carrier with a rifle. For plainclothes, a paddle or belt-slide Level II on a stiff gun belt. The belt should not roll when the holster is loaded; a belt that does is the wrong belt.

Materials

Duty holsters are laminate, a Kydex-like shell with a fabric or leather covering, or molded polymer; both hold their shape and their retention in the rain. Leather duty holsters exist and wear in, but they soften and their retention drifts. Skip nylon.

Plainclothes and off-duty

Off duty, most officers carry the same pistol, or a 19 or 43X, in a concealment holster at Level I, inside or outside the waistband, cut for the light and dot they run. A Level II concealment holster is available for those who want it and is worth having for a pistol that is sometimes carried openly. The rules on a holster covering the trigger and holding the pistol on the belt do not change with the uniform.

Training the release

The release is learned dry, with the pistol confirmed empty, a hundred times a day for two weeks: hand on the grip, thumb through the release, pistol out, back in with the hood or lever re-engaged. Then with the eyes closed. Then with the support hand on the hood, as a grab would be. A retention holster that has not been drilled is slower than a Level I and no safer.

The law, everywhere

Federal law bars carrying a pistol in federal buildings, post offices and secure areas of airports. Sworn and qualified retired officers carry in every state under LEOSA, subject to its identification and qualification rules; private owners carry under their own state's law and the reciprocity of other states.

The law, by state

Most states allow open carry of a holstered pistol by adults who may lawfully own one, some require a permit for it, and a few bar it. Most states allow permitless concealed carry at 21 or 18; the rest issue a permit through a sheriff, a state police unit or a court. Each state sets its own list of places where carry is barred, its own rule on signs and its own reciprocity, and a few cap magazine capacity at 10 or 15 rounds. The carry summary on your city page covers your state; the issuing agency and, for officers, the agency's policy confirm it.

Build the rest of the rig with the duty setup guide. Browse duty holsters, duty belts and magazine pouches; they ship to your door.

General information, not legal advice. Current as of September 2026. Laws change; check the official source before you act.