Along with the Sig Sauer Mosquito, the Walther P-22 seems to be one of those .22lr pistols everyone warns you not to get. Many point out the fact that these pistols use a cast zinc-alloy slide, a.k.a. pot metal, which tends to fracture over time. If that’s the case how come companies such as Walther and Sig continue to outsource their .22lr pistols to makers who use zinc-alloy? I have no idea.
A member on r/guns posted about their Walther P-22 which cracked after he added a suppressor. After his third shot the slide cracked and smacked him right in the face. Luckily no one was seriously hurt.