5D-39TM Marlin 39A (mounts in front scope mount hole)

This product has been discontinued by Williams Gun Sight Co. Picture is an example only of a 5D Receiver Sight and is not of the actual product.

Lightweight aluminum Williams 5D Receiver Sights are designed for rugged use and feature positive windage and elevation locks. Please note that your firearm’s receiver must be drilled and tapped for installation.