M145

The M145 Machine Gun Optic is a small arms scope with 3.4x28 magnification. It was developed for the U.S. Army and is commonly mounted on M240 and M249 machine guns. The reticle is illuminated by a battery-powered LED with varying intensity settings.

Battlefield 3
The M145 can be seen mounted on an M249 SAW in the "Operation Metro " E3 gameplay trailer for Battlefield 3.