So does access to knives, chemicals and high places.
People who would not be able to stick a knife into themselves fatally, or dare to jump off a high place, are nevertheless capable of shooting themselves.
I had a friend who unsuccessfully attempted suicide by a pistol in the mouth. He ended up with a hole in his nose. Having only brought one bullet with him, was in enough pain to get treatment. He still wears a small bandaid on the side of his nose, but he’s in a stable place now.