Doc- think your autocorrect mode just switched felony to feline.
OK- you are asking a LEGAL question without giving us any information to work with.
WHERE are you? Places like Illinois, you must have an FOID. Is there any reason you could not possess a rifle? Is it legal for someone of your age IN YOUR STATE to possess a rifle?
In general, it is legal to loan someone a firearm, however, that can vary with the exact circumstances.
Good questions get good answers, so give us something to help you.