Never seen what the grip frame on that revolver looks like. Maybe you could post a picture with the grips taken off. I don't think there are any makers out there that offer wood grips on the Windicator because there's just too small a market for it. My suggestion would be to measure out the frame and see if there is a model close to it that you could attempt to fit, sand down and finish to your liking. The other option would be to learn to make wood grips.

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Ephesians 6 (Armor of God)