The patented RediMag is a great solution for carrying a spare magazine on your AR-15 style weapon, while allowing the fastest magazine change possible. Simply grasp the fresh magazine, push the magazine release (ejecting the empty and releasing the loaded magazine), move the fresh magazine approx 1”, re-insert and release the bolt stop. You’re now reloaded and ready to fire again! RediMag provides maximum protection to magazine feed lips and keeps the ammunition free of dirt which could hamper feeding. The RediMag is easy to install and bolts solidly to any AR style firearm with no modification to the weapon.