A magnified optic changes how a rifle handles at close range. Offset backup iron sights, mounted at a 45-degree angle on the rail, are one way to keep a second sighting system ready without stacking it behind the scope.
Because the irons are off to one side, there is no co-witness to manage. The scope does the long work and the irons handle close targets or an optic problem, each with its own clean sight line.
The transition is a small cant of the rifle, usually toward the support side or strong side depending on where the sights are mounted. Keep the stock in the same spot on the shoulder and let the wrist and elbow do the rotation. For an example of a 45-degree set built for this job, see Ozark Armament 45-degree offset sights.
Mount both sights on the same rail plane. Putting the rear on the receiver and the front on a handguard that does not line up with it can make zeroing harder or impossible.
Write down your zero distance and the number of clicks used, and keep it with your range gear. If the sights are ever bumped, that record makes it faster to get back to a known setting.
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