Thanks ellenbr, the crown above the S on the left barrel in front of the flat may have a little more space than the same on the flat. The S in a shield on the right barrel 1 1/2" in front of the flat is not crowned.

Here's a better pic of the receiver top shape.

http://s618.photobucket.com/albums/tt261/ronald9391/?action=view&current=PICT0338.jpg


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