Securing rear sight

[Black Jaque Janaviac]

So once you have it sighted in I know you're supposed to close the dovetail flaps down on the front sight base with a few taps.

But what do you do to secure the rear sight when it has those flaps that cover the dovetail?

[flehto]

I just depend on the proper press fit to retain both sights....Fred

[Acer Saccharum]

If your rear sight doesn't move around, then don't worry about peening it in place.

[Daryl]

Witness marks on both sight base and the barrel.  It should be tight enough in the dovetail to NOT move.

[Acer Saccharum]

..and make the marks AFTER you've sighted it in. 

[OldMtnMan]

I tap the lip of the dovetail before installing the sight. It fits pretty tight, but can still be moved with a little effort to sight in. I've never had one move as long as it fits tight to begin with.