Safariland 6365 ALS/SLS Low-Ride 1.5" Drop Level-III Retention Beretta Storm PX4 Holster Level III Retention, ALS (Automatic Locking System) secures weapon once holstered, also features the SLS (Self Locking System) Rotating Hood Low-Ride level Low-Ride, this slim, compact design allows weapon to ride close to the body Simple straight up draw once all releases are deactivated 2.25" (58mm) belt slots