blade, a high-tension lock, and a low-pressure release; the handles are typically wood with bolsters of heavy-gauge brass. Introduced in 1964, it was one of the first lockback folding knives considered strong enough to do the work of a fixed-blade knife. Its debut revolutionized hunting knives, rapidly becoming one of the most popular knives ever made, with some 15 million Model 110 knives produced since 1964. Before 1981, the specially heat treated stainless steel used was 440C, and from 1981 to 1992 the company used 425M steel. Since 1993, Buck has mostly used 420HC stainless steel for Model 110 blades, although CPM S30V steel has also been used for some production runs. Its design is one of the most imitated knife patterns in the world. In 2017, Buck introduced the Buck 110 Auto Knife (Model #0110BRSA-B) an automatic version of the 110, designed for one handed use. The knife is a heavy duty factory built switchblade which opens with the depression of a button built into the knife handle. The Buck Model 112 "RANGER", a slightly smaller version of the 110, has a three-inch blade and is better suited for carrying both respect to the knife laws of some jurisdictions that limit pocket carry to 3" and in terms of weight for the classic metal bolster editions. In 2018, Buck introduced two new lightweight editions of the 110, a thick-handled FRN (fiberglass reinforced nylon) version called the LT, and a thin-handled FRN version called the Slim; both FRN versions rely on the FRN by itself for handle strength without reinforcing steel backplates, with the LT sturdier for use in field dressing medium and big game; it comes with the classic Buck belt sheath. The Slim version dispenses with any included sheath, since it incorporates a deep carry, stainless steel pocket clip (a first for any 110) which is reversible from side-to-side (but not top-to-bottom). The Slim also includes thumbstuds for one-handed opening, bringing the original 110 into the modern era in terms of light weight and common convenience features. Models There are many different models of Buck knives, including: the Buck Model 055 "the 55" the Buck Model 110 Folding Hunter the Buck Model 110 slim pro the Buck Model 110 lt the Buck Model 347 vantage large the Buck Model 342 vantage small the Buck Model 341 vantage the Buck Model 722 spitfire the Buck Model 726 spitfire mini