"The Operator is designed for those seeking advanced customization and exceptional forgiveness. The Operator putter features a soft billet-milled 304 stainless steel face and a body made from 6061 aircraft-grade aluminum. Multiple sole weights, available in increments of 2.5g, 5g, 10g, 15g and 20g, can be used to adjust the overall head mass from 330 to 400 grams. Multiple subtle alignment features, along with a single, high-contrast stripe make this putter incredibly easy to line-up correctly.
""Operator"" is the specific term for Delta’s operational personnel, although in recent years it has become a term for almost all U.S. military special forces."