A weapon of [[grey alien|Maian]] design in the [[Nintendo 64]] game [[Perfect Dark]]. It is a long blue railgun with a roughly ovoid stock/barrel and a long muzzle with a diamond-shaped point. It reloads by absorbing "orbs" ammunition into the side of the barrel, includes a zoomable X-ray sight that can optionally follow potential targets, and fires laser pulses that can pierce walls out to seemingly infinite range and kill any target with one shot.

Info: http://perfectdark.retropixel.net/pd/weapons/#farsight
farsight xr-20