Red rider
853 if on a budget.
Anschutz or Walther if not.
How young, and how big is he?
The Daisy single stroke Pneumatics (753/853) are used by a lot of Cadet organizations. Not hard to load up, with the long lever, though maybe a stretch for a little kid. If he's got any coordination at all, and is interested, he'll work out a technique that is safe and effective.
The 499B is a BB gun actually made for accuracy, pretty pricey, by comparison to a basic Red Ryder, but it will not frustrate him by randomly hitting off target like a lesser gun too. Makes a pretty even playing field, when competing, as everyone is using essentially the same hardware.
Maybe a look at what the other guys are using at the shooting club is worth look.
I still have my first, the venerable Redrider. My Dad brought it home for me around 40 or so years ago. Probably put a few hundred thousand bbs through it and it never failed. Still works to this day and has been used to train a bunch of youths shooting fundamentals over the years.
If you can find an HW30s in stock it is probably the best compact air rifle I’ve ever owned.
My first was air rifle was a Vostok. To this day I still enjoy it!
I might recommend a spring action break barrel. (Beeman pictured)
![]()
They aren't that compact except compared to other/bigger springers. They're about the size and weight of an adult-sized sporter .22. Maybe an inch or two shorter than my Savage Mk. II BTV and with a longer length of pull (Weihrauchs are infamous for that). Lovely air rifle, but maybe a few years early.