The Xtech Tactical Magazine for Glock 17 Gen 4 is a durable steel magazine with a 17-round capacity. This 2-pack features an upgraded design that includes a 17-7 stainless steel spring and a proprietary baseplate material made from Delrin with additive no stick properties. Additionally, the magazine body is steel reinforced for enhanced durability.Key FeaturesIncluded Magazines: Ships with two 17-round magazines.Upgrade Over Factory: Designed as an upgrade over Glock factory magazines.Spring Material: Features a 17-7 stainless steel spring for reliable feeding.Baseplate Material: Proprietary Delrin baseplate with additive no stick properties.Reinforced Construction: Steel reinforced magazine body for added strength.