This sight set has been on several 835, s over the years.
Now on my 935.
Rear sight is windage and elevation adjustable.
The fiber optic rods stay in place.
Set up front sight as close to end of rib as you can.
Set up rear sight as far back as you can for a long sight radius and to reduce error in alignment.
If you put them to close that short alignment amplifies aiming error you might make.
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