Level III Retention Drop-Rig Tactical Holster with ALS and SLS Built for maximum security in tactical operations, the Safariland Model 6304 Holster includes both ALS and SLS locks to provide Level III Retention for your backup firearm. The ALS Automatic Locking System secures the firearm upon holstering, while the SLS Self Locking System clicks into place for additional safety. Both mechanisms release quickly to allow a smooth draw when needed, ensuring no loss of precious seconds during an encounter. Thermo-molded Safari Laminate construction handles harsh environments, and the soft Safari Suede lining protects your firearm's finish and sights. The wide shroud and dual elastic straps add comfort and stability, and silicone grip strips help eliminate movement. Mounting holes on the shroud accept ELS, QLS and MLS accessories, making the Model 6304 ideal for gear-heavy roles.