I have a couple of 22 barrels that I had a friend cut to 16" and thread to 1/2-28 TPI thread. This is the basic thread used on the AR15 and most 22 barrels. To protect the threads and the crown during rifle classes I use a cut down AR15 flash hider on it which we call mud guards.
Here's what I'm talking about, cut down FH on middle bbl, over the full size FH. Those are on a Marlin 785 and Mod 60 bbl.
That's ok but I really don't need a hardened steel FL on my 22. What I really want is an aluminum flash hider or muzzle comp for under $10 that fits a standard profile barrel. Heck it doesn't even have to be a FH or MC (who needs a FH or MC on a 22?). It just needs to be a thread protector long enough to also protect the muzzle crown from damage or dirt should the barrel inadvertently get in the snow mud/dirt. We call them mud guards.
Unless I am crazy, I've had no luck finding one for standard width bbl let alone one under $30 or so. Seems to me that it would be pretty easy to thread a piece of aluminum bar stock and reduce the diameter to fit a 10/22 barrel. So why isn't someone making these?