OK, let's be clear that this is predominantly a site for people who play airsoft at insured skirmish sites.
It is actively against our interests to have a 12 year old who has yet to play airsoft get access to RIFs.
Before asking any more questions on how to get access to one, I'd suggest that you first go and play airsoft - at a site, not in the local woods- with your perfectly usable Cyma.
Please be very careful in how you transport it to and from the site, and have the site details and it if at all possible a booking confirmation to hand at all times.