For law enforcement, security, or serious tactical shooters who carry a Smith & Wesson M&P with a 4.5-inch barrel (and no thumb safety), the Safariland 6345 is a top-tier choice.

This is a duty-grade holster worn on the leg (low-ride level) for quick access.

Its standout feature is the ALS (Automatic Locking System) – a hoodless internal lock that automatically secures your pistol the moment you re-holster it, providing Level III retention.

That means it's locked in against attempts to snatch it.

To draw, you simply use your thumb to deactivate the release lever as you grip the pistol, allowing for a smooth, straight-up draw.

The construction is Safariland's tough SafariLaminate, which is thermal-molded to protect your firearm's finish and sights.

It comes with a standard double-leg strap harness and a shroud that has mounting holes for adding accessories like pouches.

It's also lined with suede to be gentle on your gun.

This holster is all about secure retention, durability, and fast, intuitive access.