Inspired by the Spartans who closed the Hot Gates on Xerxes, this lower honors the warrior mindset. Technology evolves, warriors never change. This lower is designed by Rare Breed Firearms for exclusive distribution by Spikes Tactical. This multi caliber lower receiver uses a threaded pin for the bolt catch and is included with the receiver. Features bullet pictogram selector markings. Low shelf, RDIAS compatible. NOTE: Requires a lower parts kit, buffer & stock of your choosing to complete.