RG are real guns and cheap at that. Some works some don't.
I had an RG-10 22 short that can fire 22 LR with no problem. Goes bang every time. This one you have to unscrew the pin and drop the cylinder in your hand to poke out the shells and reload.
I had an RG-15 22 LR that's more deluxe in that the cylinder swing out like a regular revolver and takes at least 15 pulls on the trigger to fire 6 shots.
I had an RG-10 22 short that can fire 22 LR with no problem. Goes bang every time. This one you have to unscrew the pin and drop the cylinder in your hand to poke out the shells and reload.
I had an RG-15 22 LR that's more deluxe in that the cylinder swing out like a regular revolver and takes at least 15 pulls on the trigger to fire 6 shots.