As many of you know, the German gunmakers, especially prior to WWI, but to some degree to WWII, carved trigger guards, buttplates, and sometimes other parts for guns/rifles, from buffalo horn, horn that tends to be mostly black in color, but sometimes with some areas that are brown; with periodic blotches of white. I am quite certain that it was water buffalo horn from India that they used. I am in U.S.A.; have hunted big game all of my life, over past 40+ years, but, of course, have never hunted water or cape buffalo, so I know next to nothing about the animals and the horn. Did the early German gunmakers truly use buffalo horn from India, or what? Are the water buffalo in Australia the same species as the ones from India? How does cape buffalo horn compare to water buffalo horn? Is that water buffalo horn hollow or solid? Where can one buy pieces of such horn, large enough for carving triggerguards/buttplates, etc. as repladement pieces on these sort of guns/rifles?