Rigidity of your chassis improves accuracy and dependability and is accomplished throughout the usage of a patented substitute running rod guide block. Precision machined receiver lug recesses also remove the need for additional bedding. Fitting SAGE EBR chassis to non Mil-Spec/Commercial rifles might require more gunsmithing. Doesn't take rear-lugged receivers. https://btstockconversionkit98529.blogitright.com/26921930/a-review-of-sage-ebr