Be always faster thanks to more efficient and convenient reloads. Thanks to the latches on the side of the magazine, you can interlock how many you want. Nonetheless, it wouldn't be convenient with more than three.
The transparent polymer of the magazine allows you to see how many BBs are left. Now, after a quick glance at it, you will know if you need to reload or not. Besides it just looks futuristic. No more black boring mags.