An original Parker’s sight protector, designed for the Short Magazine Lee-Enfield (SMLE) and No.4 rifle family, used to safeguard the rear sight assembly during transport, storage, or field carriage. Constructed from nickel-plated brass or mild steel with a hinged cover, this model bears the Broad Arrow (War Department) mark and characteristic knurled tension screw — both confirming British military inspection and acceptance.The interior was designed to fit securely over the rifle’s aperture sight, shielding delicate windage and elevation mechanisms from damage or misalignment. This particular example is a Parker-Hale manufactured model, made to military specification and issued for both service rifle and training range use through the interwar and WWII periods.The chrome/nickel-plated finish suggests it may have been part of post-war Armourer’s issue or NRA competition stock, as the reflective surface was occasionally used on rifles maintained for ceremonial, cadet, or range demonstration purposes.