I would suggest that you buy yourself the engraved model and a single shot .22 Chipmunk rifle for the 5 y/o and get her to the range. Having raised two daughters, the window to get them involved is very narrow and she is probably in it already. Buy the younger one her own rifle when she is the same age.

Giving them something they can not touch will not nurture an appreciation for firearms nor give them a sense of ownership with an item of real value.