Where can I get info about making a custom airsoft gun for my rc helicopter?

if you succeed be very careful to keep it on the down low,i armed my 1/4 scale corsair with 8 rockets,little more than dressed up bottle rockets,for memorial day 3 years ago,and we almost lost our AMA charter (didn't know the regional pres was presant)lol seems to me it would be awful heavy for an electric heli my set up was 26 oz with batt ignitors wiring releases ect