To use quotes above,
very high quality stuff....
Viper Archer Products newest line the Predator Pro MT (Microtune) was the very best sight I found when I researched new sights. I've purchased 3 thus far. Incredible quality and fibers and machining. Priced lower than comparible sights and by far, better.
Here's my review back when I researched sights.
http://www.huntingnet.com/forum/tm.aspx?m=1577393&mpage=1