British Vickers MMG Rear Sight Assembly & Range Scale: MKIV (type 3)

One feature that did evolve, however, was the design of the rear sight.  The basic component is a long (over 9 inches) folding sight stem hinged to the top of the receiver.  Although the sight is normally used with the stem erect, there is an aperture for use when the leaf is folded.  This aperture is sighted for 400 yards.

A range scale is screwed onto the face of the leaf.  These scales are of the No. 2 Mk I variation, graduated for the .303 Mk VII ball cartridge. 

The major differences in rear sights on the Vickers MMG is the design of the slide assembly.  The following models are available from IMA (The Mk III** was by far the most common issue):

            Sight Assembly Model Stem Model                  Slide Model

            Sight, Tangent, Mk III     Mk II                        Mk II V-notch

            Sight, Tangent, Mk III**   Mk II                        Mk II* aperture & knob

            Sight, Tangent, Mk IV    Mk II                      Mk III enclosed aperture

This Item is: Sight Assy Mk IV, With Stem Mk II & Slide Mk III