This is a Fiber Optic Florescent red front sight for the 80 series, Colt style pistols & Clones. Made from CNC machined Bar Stock, No MIM. .125 staking post. Fiber optic rod not installed, but included. Not installed so that the staking operation can be completed during installation. The fiber optic rod is easily installed by melting ends with a match or gluing. Top Quality Professionally made sight.