WILLIAMS FP-39 Receiver Peep Sight with Target Knobs for Marlin 39A (1256)

Internal micrometer adjustments have positive internal locks. The FP Receiver Sight is strong, rugged, dependable. 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.

For big game hunting, the FP Receiver Sight will outsell all other makes and models of receiver sights put together. Many rifles are now being drilled and tapped at the factory for installation of the FP Receiver Sight.