Marine Corps Commandant Gen Wallace M Greene, Jr, defends the controversial M-16 rifle during a press conference at the Pentagon saying that the weapon has proved to be a "reliable, hard-hitting, lightweight weapon" for US troops that requires more care by soldiers than earlier firearms, Washington, DC, 5/27/1967. (Photo by United States Information Agency/RBM Vintage Images)

- Image ID: 2DBJ00T

Marine Corps Commandant Gen Wallace M Greene, Jr, defends the controversial M-16 rifle during a press conference at the Pentagon saying that the weapon has proved to be a "reliable, hard-hitting, lightweight weapon" for US troops that requires more care by soldiers than earlier firearms, Washington, DC, 5/27/1967. (Photo by United States Information Agency/RBM Vintage Images)

RBM Vintage Images / Alamy Stock Photo

Image ID: 2DBJ00T