The next step that we perform is to insert the Rear Sight Aperture into the Sight Base. The Aperture should slide in freely until it bottoms out.

With the Rear Sight Aperture in place turn your attention to the Elevation Knob. This knob simply slips on from the left hand side through the Ears in the Receiver, under the Cover Spring, and into the Rear Sight Base. The Splines on the Elevation Knob Should come into contact with the splines on the Aperture in such a way that the long indexing mark below the 2 on the Elevation Knob Lines up with the index mark on the Receivers Sight Ear. I then push the knob till it sits directly against the Receiver.

The final part to attach is the Windage Knob. In order to prepare for this move the Sight Base so that its index mark lines up one line to the left of center as marked on the Receiver. The reason we do this is because when we place the Windage Knob and tighten it down it will move the sight a few clicks to the right as it tightens up.

On to the final steps!

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