Calvin: Can't help on the slot size. If you are making one I personally would make it the same size as the floorplate if for no other reason than to make it easy to use the same size screwdriver bit. Somehow I doubt if even the most "persnickity" of us Parker boys would consider the gun junk if the slot was off by a few thousands. BTW, I hope to have the rest of the 16 gage by the end of July. I'm told the frame and locks have finish as nice as the outside of the barrels. Wish the bores were that good. Lee.
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