Top Definition
The M145 MGO is a 4 power optic used by the US Military for the M240 family of weapons and the M249 SAW. Inside the optic are lines and numbers showing different ranges to shoot.
Dude, my M145 sucks ass, you have to look just in the right spot to see shit...wish i had an EOtech sight.
by fwa11b April 01, 2007
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