FM002 is a vector art collection of various types of gunsights/targeting reticles. The set contains dozens of pulpy/"spy"-styled reticles, contemporary and historical reticles, and a science-fiction/arcade themed collection. 

The set is $5.00 US and the download includes versions for Adobe Illustrator CS1–CS6. 

Also available is F002—A free sampler of this full, commercial set, including a unique vector, not available in FM002: RETICLES.