the shell ejecting m4 m2037 is something i just purchased, i haven't gotten it yet, but im wondering if it might be compatible with normal airsoft uppers, or atleast airsoft front barrel assemblies. theres really no information on it. this is my vision - gut the thing, put all the mechanisms into a high quality metal body, put a whole new .03 barrel in it and front outer barrel, ris etc, replace the buttstock. and since the mag only holds 8 shells, im thinking of modifying a real m4 mag to fit it so i can fit 20-30 rnds in it. does this sound possible? also, does anyone know what specific type of "caps" the rounds take? or if theres a way to up the power?