30mm 1 Piece MSR Mount, MatteTime tested designs Easy to install Field proven performance Lightweight aluminum The Vapor cantilever MSR mount is perfect for someone looking to get an affordable US made one piece scope mount for their MSR AR style rifle. The cantilever design gives you the eye relief you need for modern rifle scopes and is a perfect scope mount for a low power variable optic. AFFORDABLE, MADE IN USA QUALITY Our Vapor line of mounts was developed and engineered to