with this kind of grip you dont hald with with the thumb, that way you are not committed to one angle of the barrel. In real rifles it has a use but in airsoft... well thats another story, here you cant ditch the empty mag and replace it with a full one cause yours paying for it and your life dont depend on it, and you dont have a hop up that makes you shoot vertically only.
Vek, FAB public defender (NOT)