This M21/M14 ultra low profile Mil-Std 1913 rail allows interchangeability of day and night vision optics. The scope mount has two attaching points, plus a third contact point for ultimate stability. Made of 8620 case hardened steel. MADE IN THE U.S.A.
NOTE: Will work with the Sage EBR chassis. NOT compatible with the EOTech G33 magnifier.