SOG ONE-ZERO XR KNIFE Featuring fluid, yet confident lines, One-Zero XR is much more than a handsome face due to its super strong XR Lock providing smooth and reliable blade lock-up, CRYO CPM S35VN steel blade, and sculpted aircraft-grade aluminum handle with hidden fasteners. ABOUT SOG Our story begins in Vietnam, where members of a highly classified US special ops unit - known as MACV-SOG - carried a unique combat knife into the jungle on covert missions. Years later, in 1986, that knife inspired a young designer, named Spencer Frazer, to found SOG Specialty Knives. His mission: to reproduce the original SOG Bowie knife and pay tribute to the special ops unit that created it. What began as a single commemorative model soon became a full line of innovative tools - field-proven by US Special Forces, even honored as the Navy SEAL knife of choice. Today, SOG knives are carried with confidence into the most demanding situations. Forged out of tradition, hardened in the field, honed for you. So whether you're protecting others or leading an epic hunting expedition, tackling one of life's everyday challenges or facing your most extreme conditions yet, lead the way with SOG.