I took the kids jeeping to Moab when they were 3 and 1.5 years old. Made special arrangements with seating, to keep them safe, but didn't stop me from hard trails. Although I did take them out of rig when I was potentially getting stupid. They got their first rifle at birth. Dad's a gunsmith, and they're heirloom rifles, albeit .22. Didn't shoot them until they were 5 or 6. Got a BB gun at same time and shot it a bit... but got bored easily. Nurf is more fun. Took oldest to Hunter's Ed at barely 7. Was youngest kid in class. Passed with flying colors, but, did have some issues with reading comprehension of the testing material. The instructors provided clarity and he was good. He went hunting that year, and every year after, although he only 9 and I haven't given him a hunting rifle or bought a tag yet, as he's too small to shoot a cartridge large enough to harvest an elk with his limited skill set. Daughter was going to take test this year, (at 7) but Washington cancelled in person hunters ed, and online requires you to be 8. Next year. They got a PW50 dirt bike at age 5, and it's handed down from kid to kid. Again, the kids prefer the bicycle to the dirt bike. Go figure. Looking for a 110 now, but haven't found the right deal. Kids are now 9 (boy), 7(girl) and nearly 4(girl). edit; already started basic driving (the jeep back and forth to bus stop),, can't reach pedals but working on steering. Boy does pretty good. Girl goes from ditch to ditch, then back to first ditch.... you get the picture. Another edit; the Pw50 dirt bike had training wheels (since removed), that's a nice option, as kids weren't good at biking yet, but really makes it hard to turn. Also added extended foot pegs so I could ride behind them to help.