Dan Mitchell demonstrates how the Universal Airsoft Mid-Cap Unloader works in this video. You can get one on eBay... "No more bent finger nails! No more blowing BBs everywhere when trying, but failing, to unload directly into a bottle or speed loader!

Quicker unloading at the end of a game day, pack up and get home quicker!
Keeping mags unloaded prolongs the life of the spring, this makes the job that bit easier!

Universal design! Works with bottles, bags, speed loaders etc."