AR / Rifle KYDEX OWB MRD Magazine Holster. Simple solution to carry your spare AR/Rifle mag with you. Extremely versatile with mounting holes on both sides to accommodate your preferred mounting choice for OWB Carry and Right Hand or Left Hand Draw. AR Mag Holster comes fully assembled for RH OWB Carry, but is easily reconfigurable with just a Philips screwdriver. Our AR/Rifle MRD magazine holster comes with an X-Lock OWB Mount, but are also Paddle Compatible.