As far as I know, here in the UK there are no age restrictions on shooting. It may interest you to know that I shoot the L98 or SA80 (5.56), the standard rifle of the British army. I shoot it with the air cadets. I also shoot 22. and 12 bore shotgun. I also once fired 7.62. You have to be 14 to shoot 5.56 and 13 to shoot 22. I also don't like the 22. because there is little to no kick.