Inspired by the Samurai warrior, 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. MIL-A-8625F Type III Class 2 Hard Coat Anodized finish.