My father-in-law is great with guns. Very accurate shooter, makes his own bullets. He could hit flying birds when he was a kid. He always carries a gun with him. A few years ago there was a dispute with a neighbor and he went to help her take photos of a few young workers who messed up her lawn. They approached him and wanted to take his phone. He pulled out his gun and told them to back off. At first they taunted him but he just stood there and told them he would shoot if they came closer. Well they called the cops on him. The cops showed up and he told them he's an older man and won't be able to fight them physically and the gun is his way of protecting himself. They laughed and agreed and moved on. 
Not everyone can walk around with a gun..
Escrima has some very good techniques, empty hand & weapons
Philipino boxing in there too.