"Optical refracting telescope sight with wedge reticule; offers increased tactical options by dramatically extending effective combat range."
W-Y 2x Telescopic Zoom Sight description (from Aliens: Colonial Marines - Arsenal Upgrades - NSG 23 Assault Rifle - W-Y 2x Telescopic Zoom Sight)
The 2x Telescopic Zoom Sight is an optical refracting telescope sight manufactured by the Weyland-Yutani Corporation for the NSG 23 Assault Rifle.