This is an answer from the Kel Tec P32 forums
"the firing pin will go too far forward during dry fire. This can cause the pin to make the firing pin hole wider, and also damage the firing pin. This 'over-travel' can also cause damage to the lower threads of the extractor screw"
I have a KT pf9 and a Ruger SR9c that can't be dry fired either with out precautions
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