Start up internet sales Welcome to the CDavis Group This site is devoted to people interested in self defense using martial skills and products. As a martial artist and firearms instructor, I offer tips and suggestions on selecting a self defense philosophy and a strategy to protect yourself and your family. We offer proven self defense products and information on usage. Also Firearms training as a Massachusetts State Police and National Rifle Association certified instructor. The CDavis Group offers quality service with products at a fair price.