“NAA has some interesting small frame 22magnum and 22lr pistols.”
I have their derringer .22 magnum and it sometimes does not fire one round. Don’t know why.
Probably a firing pin/spring problem....also some 22s are just more reliable with something like CCI ammo. I’ve got a couple/three of 22s that have infrequent problems because of using Remington Golden 22s.