The UTG Window Magazine features a durable and impact resistant glass fiber reinforced matte black polymer construction. The four-way anti-tilt high visibility blue follower and high longevity stainless steel spring offer reliable feeding. The magazine is positive grip textured and left and right side windowed. The main body has remaining round count indicators, over-insertion stop, and a removable flared floor plate. FeaturesDurable Impact Resistant Glass Fiber-reinforced Matte Black Polymer ConstructionSteel-reinforced Locking LugsReliable Feed High Visibility Blue Follower and Stainless-steel Spring30 Round Capacity with Left and Right Side Co-molded Polymer Windows and Debossed Round Count IndicatorsRaised Bosses for Added Grip RetentionEasy Disassembly and Maintenance with Removable Flared Floor Plate