Glock Gen 5 Black Glock 17 / Glock 34 9mm Luger Handgun Magazine - 10 Rounds- These are genuine factory replacement magazines for Gen5 Glock 17 / 34 pistols. Built around a tough, crack resistant, molded polymer body, Gen5 mags have a steel lining for extra strength and durability. Inside, an orange follower makes keeping track of load status through the witness holes easier, while the extended, angled baseplate helps with those fast magazine changes. Glock 17 / 34 Gen5 magazines are contoured at the base to match the flared magwell of Gen5 pistols, yet are still fully compatible with all earlier generation Glock pistols. Features Capacity - 10 Rounds; Material - Polymer; Fits - Glock 17 and 34; High-visibility orange follower; Witness holes on rear face;