shadowhawktactical.comは安全ですか？

Note that this site never gives the power of the green laser, other than "max legal milliwatts" wich is apparently 5 mw. Thus they are simply green laser pointers with mucho hype. Prices indicate the low end of the quality end, which bodes ill for ruggedness and reliability. If you want a green laser pointer (I've carried one for years for use in teaching, and in shopping to indicate things on the wall behind the counter, or to pick out other items out-of-reach for discussion), then you can get one from numerous reputable sources at prices consistent with quality.