The RCBS 90201 is a Universal Hand Priming tool that incorporates the best attributes from our other hand priming tools, all packed into one handy device. It\'s unique in its design, featuring a patented safety gate that provides a secure separation between the primer seating operation and the primer supply. This smart design feature almost completely negates the chances of tray detonation. Packaged with a removable primer tray, the tool helps you efficiently orient your primers for usage. Interestingly, this tray is versatile to fit primer packaging of any manufacturer. The package includes accessories that can be used to seat both large and small rifle or pistol primers. IMPORTANT: The tool is designed to accept cases ranging from .32 ACP to .45-70 Government.