Short (1/2") piece cut from a wire coat hanger.
Chuck in Dremel.
Use fine abrasive paper (400~600) to grind taper on to one end.
Cold blue when done & trim to length & diameter(s) needed.
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Allan Quatermain: “Automatic rifles. Who in God's name has automatic rifles”?
Elderly Hunter: “That's dashed unsporting. Probably Belgium.”