WHAT DOES EBR CHASSIS MINI 14 MEAN?

Thanks all over again for the fast response. In my two dealings with your business, your customer support is stellar.This chassis is made for Ruger mini-fourteen but I'm undecided it will, and I experienced difficulty acquiring info about this.In addition the chassis features four Mil-Spec 1913 Picatinny rails, three ambidextrous sling mounts, a de