Look at the Savage 10 FCM scout.
It has a Williams ramp on the front of the 20.5"sporter weight barrel and a .375" height bead sight dovetailed in to the ramp.
On the rear (attached to the rear scope mount holes) is a standard Williams aperture sight. With no aperture inserts, it acts as a ghost ring.
It has a Savage scout sight rail that attaches to the front sight base holes and a hole drilled and tapped in the barrel.
You can get many different apertures, adjustable or not, for the rear sight.
http://www.savagearms.com/firearms/model/10FCMSCOUT
Also, more details at: http://www.savageshooters.com/showthread.php?15461-Savage-10-FCM-Scout-in-7-62x39-review
You might also want to consider having something like the Williams "Ace in the Hole" made for you. See page 2 of their catalog: http://www.williamsgunsight.com/gunsights/pdf/2012_Catalog.pdf
Front Firesight, (for the existing streamlined ramp on the Savage Scout: narrow, .375" high: Williams 56436: page 6 in their catalog
Front sight hood for firesight: Williams 70031, also page 6 of their catalog
Rear sight is the Williams WGRS-SAVAGE: (page 13 of the catalog)
I hope this gives you at least some ideas.
Good luck!
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