I am looking into buying a P99 40S&W, however i have been having problems deciding on what trigger to get. This will be my first gun, so i am learning a lot by all my research. I am leaning towards the AS, but i am understanding there are no safes on this gun, is this true? That makes me feel uncomfortable and i was wondering if someone could please tell me what keeps this gun from it firing unintentionally. I thank you in advance for your input.