They worked fine and were accurate until the zinc got brittle and the guns fell apart.
Tis' the truth, it happened to my IJ TP-22 and quite spectacularly. Cracked the frame, the slide, and the trigger guard snapped. Not even the slightest injury at least.
"My momma, she done told me, there's heart and then there's hate
If one of 'em's inside of you, the other one, it aint."