What's the deal with a sound activated loader? An optical sensing loader "prevents" misfeeds while with the Reloader they simply don't happen. While an optical loader basicaly acts like a regular gravity fed loader until it senses a misfeed and then rotates the paddle, the Reloader never waits for a misfeed to happen. Instead it loads a ball everytime the marker is fired, able to load up to 14 balls per second. This latest version of the Reload features an improved shell design, magnetized lid that won't wear out, and a contained battery door so you won't lose it!