The best bet here is an IMI Timberwolf
As you can see, this model has wooden parts so it fits in with your requirments
And because it has a pump action you can fire quickly so you can use it for "defensive" means as you put it.
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"Do not tell lies, and do not do what you hate,
for all things are plain in the sight of Heaven. For nothing
hidden will not become manifest, and nothing covered will remain
without being uncovered."
The Gospel of Thomas
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