The Lock-N-Load headspace gauge itself is an essential tool for reloaders who seek to achieve the perfect fit for their cases in any firearm. By allowing users to accurately measure cases during the sizing process, this gauge ensures that each case is tailored to fit optimally within the firearm's chamber. This precision measurement capability is crucial for maintaining the performance and safety of the firearm, as well as for achieving consistent shooting results. Designed for compatibility with the Hornady headspace comparator Enhance brass longevity, improve accuracy and increase safety All bushings are interchangeable with the comparator