Is part of my rear sight missing?

[Rolan_Kraps]

Thank you very much. I appreciate your help.

Information

Warning: This is a relatively older thread This discussion is older than 360 days. Some information contained in it may no longer be current.

[vintage hunter]

If you're going to get a micro rear sight be sure it's for the no.4 not the no.5. They look identical at a passing glance. The scale on the no.4 sight will be marked up 1300 yds and the no.5 to 800. I would imagine the graduations are also coarser to compensate for the shorter barrel of the no.5.

[Parashooter]

I would imagine the graduations are also coarser to compensate for the shorter barrel of the no.5.

That imagination could be mistaken. The shorter sight radius of the No.5 obliges the sight graduations to be finer (closer together) than those on the No.4. As often happens, geometry trumps velocity in this case.

By actual measurement, the distance from the "2" to the "8" index lines is .235" on a No.5 Mk.1 and .275" on a No.4 Mk.2, both of postwar Fazakerley manufacture.

[Rolan_Kraps]

I'm going to leave the sight the way it is.