New release from Gieselle Automatics called the Giesselle Raptor Charging Handle. Time to ask your airsoft manufacturer to make one for airsoft or find out if it can fit an M4 GBBR... "Geissele Raptor™ ambidextrous charging handle by AXTS. The Raptor™ is truly revolutionary in design & function. From rapid palm “blading” or finger thumb charges of the weapon, the motion is fluid & fast from either strong or support side. Made in the USA from aircraft grade 7075 aluminum and milspec anodized."