Built for hard use, this 30-round AR-compatible magazine features a durable, non-slip polymer tube, anti-tilt follower and a powerful spring to ensure reliable performance in even the harshest field conditions. The magazine's floor plate is easily removable, allowing for deep cleaning of the tube, spring and follower after high-round count range sessions. Designed for versatility, this magazine allows you to switch between calibers with no loss in feed reliability, making it a practical choice for a variety of shooting needs. Caliber compatibility includes 5.56x45mm, .223 Remington, 300 Blackout and 300 HAM'R Designed for seamless compatibility with all AR-15 platform rifles Proven reliability in harsh field conditions ensures consistent performance in demanding environments Constructed from highly durable fiber-reinforced polymer for exceptional strength and longevity OD green high-visibility anti-tilt universal follower for enhanced reliability Easily removable floorplate with openings for dirt, water and debris removal