New Inside-The-Bow Release system with 2deg draft on the entire perimeter is the perfect addition to a timeless classic. The Pre-64 One-Piece Assembly eliminates the middle screw from the original bottom metal and provides a distinctive touch of class to your custom rifle project. Beautifully machined and expertly assembled to provide the final touch to your dream rifle. This bottom metal unit can be used for Pre-64 receivers originally chambered in everything from 270 to 375H&H. For calibers originally from the factory in 300H&H and 375H&H, slight modifications to your existing magazine box is all that is necessary. All other calibers will function perfectly without mag box modifications. This part does require minor inletting into a factory or aftermarket stock. Please call our toll-free number for dealer pricing.