The world abounds in instruments with which people can kill each other. Is the widespread availability of one of these instruments, firearms, a crucial determinant of the incidence of murder? Or do patterns of murder and/or violent crime reflect basic socio-economic and/or cultural factors to which the mere availability of one particular form of weaponry is irrelevant? This article examines a broad range of international data that bear on the question whether widespread firearm access is an important contributing factor in murder and/or suicide. Our conclusion from the available data is that suicide, murder and violent crime rates are determined by basic social, economic and/or cultural factors with the availability of any particular one of the world's myriad deadly instrument being irrelevant. ------------------------------------------ * Don B. Kates (Ll.B., Yale, 1966) is an American criminologist and constitutional lawyer associated with the Pacific Research Institute, San Francisco. He may be contacted at firstname.lastname@example.org; 360-666-2688; 22608 N.E. 269th Ave., Battle Ground WS 98604. ** Gary Mauser (Ph.D., U. California, Irvine, 1970) is a Canadian criminologist and university professor at Simon Fraser University, Burnaby, BC Canada. He may be contacted at www.garymauser.net, email@example.com, and 604-291-3652.