First developed by Ralph W. Stolle in the late 60’s and the early 70’s, the Stolle line of actions emerged after many changes in design and techniques. The rigidity and lightweight characteristics are highly desirable features, a must in today’s competitive benchrest rifles. Made entirely of 7075-T651 aircraft aluminum and 4140 alloy steel, they insure the optimum in stiffness and durability. Kelbly's entry into steel action manfufacture…has led to the revival of the Grizzly name for the stainless or chrome moly Grizzly II centerfire action. The Atlas action was added in 2009 as a Remington semi-clone, and is available with or without a magazine. The actions have a 416R stainless steel bolt. They also use a trigger bracket that accepts Remington style triggers.