GBRS GROUP X PRIORITY 1 OWB HOLSTER FOR GLOCKA(R) 9MM/.40 W/SUREFIRE X300UA(R) GBRS Group x Priority 1 Modular Outside the Waistband Holster collaboration is DJ's favorite go-to holster for range use. Boltaron construction with adjustable screw-on retention for user preference. Open-ended design allows for threaded barrels and compensators. Optics cut ready to accommodate most slide-mounted optics. Designed to optimize your carry experience with the ability for various belt or drop-leg mounting options. Use this in conjunction with our offering of True North Concepts Modular Holster Adapter. Please see below for additional information. NOTE: A SUREFIRE Mfg: Gbrs Group