Replacement sight for Bandit toy crossbow

I've had a ["Bandit" toy crossbow](http://www.barnettcrossbows.com/products/youth-archery/bandit-toy-crossbow) for the better part of 20 years, mostly using it to kill houseflies when they spawn in the springtime. But I lost the sight for it and finally got around to making a replacement. It's not as ornate as the original, but it gets the job done.