Williams Gun Sight Western Precision FP Rear Sight

The "Fool Proof" (FP) sight has internal micrometer adjustments with positive internal locks. The FP Receiver Sight is strong, rugged, and dependable, providing many windage and elevation adjustments. The alloy used to manufacture this sight has a tensile strength of 85,000 pounds. Yet, the FP Receiver Sight is light and compact, weighing only 1-1/2 ounces.