With both of the Sight Knobs taken
out, the Aperture is easily removed.
[NOTE: Many individuals like to remove the
Sight Base and Aperture as a whole instead of in
pieces the way we do. They save a couple of steps
by simply pulling the Aperture half way out and
pushing it up from the bottom till it 'pops' the
Cover Spring and then remove all of the pieces at
To remove the Aperture
simply grip it near the top and neatly 'roll' it
up and out of its channel in the Rear Sight Base.
When the Rear Sight
Aperture has been removed the next step is to loosen
the Cover Spring so that it and the Rear Sight Base
and be removed.
Disengage the spring
by simply lifting the Rear Sight Base as high as
it will go and then gently taking a small flat bladed
screwdriver and pushing in and up on the Cover Spring
as shown below.
Note: Wrap the screwdriver
blade in a thin piece of rubber or in a gun cleaning
patch so as to avoid scratching the Cover Spring.
Once the Cover
Spring is loose remove the Rear Sight Base.