The TC tang sight is a good one also and if your rifle is factory tapped (three holes in the tang) it's an easy install. The problem will be finding one at a decent price. They usually can be found on Ebay and Gunbroker, at $100 or so, sometimes in the original package. The Lyman sight is a good one too and available new, I believe. There's also a guy on Ebay that sells a barrel mounted fiber-optic peep that he assembles with Williams parts. Goes for about 65 bucks and includes a fiber-optic front sight of the correct height. Just search "Thompson Center tang peep sight" on Ebay. They're on sale now for about $50.
