In some cases, the safety is built into the trigger or the grip or both. With a grip safety, if you grip the gun properly, the safety turns off. Likewise a trigger may be split, with one piece further forward than the rest. You have to pull the trigger properly to disengage the safety as you shoot it.
In this case you have to pull the trigger properly while also gripping the gun properly. No manual safety, but it still won’t fire if you drop it or a pen works it’s way into the trigger guard in a purse or something.
Automatic safeties are a thing and pretty common.
In some cases, the safety is built into the trigger or the grip or both. With a grip safety, if you grip the gun properly, the safety turns off. Likewise a trigger may be split, with one piece further forward than the rest. You have to pull the trigger properly to disengage the safety as you shoot it.
In this case you have to pull the trigger properly while also gripping the gun properly. No manual safety, but it still won’t fire if you drop it or a pen works it’s way into the trigger guard in a purse or something.