[TUT]How I got the heartbeat sensor
First off let me start off by saying it sucks

.
Theres that glitch gun glitch going around, but for some reason people can't get it? What I did first was:
Click on the gun above it, click on the Messenger, and Click Once on the heart beat sensor, let almost a half second pass and click again, its not a double click, but its a more slow click pace but you can't do it to fast, and yes its possible I got the nuub weapon lol. Probably best on S&D
Your clicks are more like counting to 2
Click.....Click
Not
ClickClick
Give it about 3 goes if you dont get it on the first try and it should work perfectly