In this instructable, I'm going to show you how to create iron sights for your spudgun, air rifle, or whatever you want to. They are made from sheets of pvc. If you can buy sheet pvc, that would be better but I am cheap so I made my own following these
instructions. My design is based off of the sights of a chain gun/grenade launcher from Crysis: Warhead, but you can design your own sights if you want. I would recomend using MW2 to get different ideas for iron sights. Also, don't be fooled by how complex the sights I'm building look. You could make a basic set like what are on most pistols if you don't want to do too much work but still want sights.