Both the Pacific and Redfield sights required that the Krag magazine cut-off be removed.

The Pacific sights have a shaft that slips into the cut-off hole. A normally 'hidden' set-screw locks the sight base to the receiver. The slide on the Pacific is easily removed to allow Bolt removal. A set-screw on the slide allows easy return to the sighted-in position.

The Redfield sight has a 'claw' that hooks into the cut-off shaft opening and a longer 'replacement' side-plate screw to hold the sight base in place. If the sight slide is fully raised, the bolt is easily removed. A set screw on the slide allows return to sighted-in position.

The Redfield system can leave a rough spot in the feed path; there is an easy fix.

Both companies made a micrometer version of their sight. These are more expensive and clumsy for bolt removal.

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