Designed to fix the deficiencies of steel magazines, these magazines are constructed of reinforced nylon polymer for durability. Their polymer construction resists corrosion and dents, while a pop-off storage/dust cover takes the pressure of a full cartridge stack off feed lips for storage and blocks debris from entering the magazine. Additional features include an anti-tilt follower, stainless spring, textured gripping surface and removable floorplate. The dust cover stores on the bottom of the magazine when not in use.