This is the Truglo TFO pin I purchased-

http://www.cabelas.com/cabelas/en/te...d=&parentType=

I think this is the type NorthJeff is referring to-

http://www.cabelas.com/cabelas/en/te...navAction=jump

The TFO has the tritium contained in the base of the site so that the glow illuminates the fiber optic. The tritium pin is exposed, so you are using the actual tritium glow as a point of sight reference...

Edited by - Rangeball on 02/22/2002 14:29:23