So my son saved his pennies and bought himself a new KWA KM4 SR10 http://kwausa.com/2012-09-20-14-43-07/kwa-km4-sr10 We swapped over his riser and red dot as well as his tactical flashlight. Holy poop it is now over 7 lbs (real steel equivalent ). I love it, but honestly he is 12 and I am suspecting it is going to be a bit heavy after a full day of playing. Does anyone know of a polymer free floating RIS ? I am wondering if perhaps that will lighten it up a bit for him if he cries uncle.