If you have a drilled Switch Grip outer already installed and want to get rid of it, a 1 3/8 slug will fit right in it. A good tip is to take the palm bevel sander lightly to the inside of the siwtch grip hole to give the slug a textured surface to "hold" on to.
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"Why don't you call me sometime.....when you have no class" ~~Rodney Dangerfield to his college professor in Back to School ~~1986
Mike Craig-Columbus, OH