There are no posts, No Videos or any type of related content of this so I'm the founder of this, If you re-post this glitch or decide to do a video tutorial please give me credit. Much appreciated!

Founder Gamertag: Rihlest (Xbox360)
Ttg Username: Rihlestt

Text Tutorial:
1. get The EM1 from the 3D Printer

2. Use the ammo until it reaches 10%

3. Once at 10% be sure to "Hold" down the trigger until completely depleted but be ready because once you hit 0% your character will do the animation of putting the gun away and bringing out your secondary weapon.

4. As your character does the weapon switching animation, quickly press Y (Xbox360/1) or Triangle (PS3/4) if done correctly your EM1's ammo will say 0% but it does have unlimited ammo!

FYI:
If you decide to upgrade your EM1, You will have to repeat this glitch & Max ammo's will reset your ammo to 100% but it will not decrease.

If someone could do a Video Tutorial let me know and please give me credit for finding this glitch.

Pro's:
Great for building credits and always helpful when Insta-Kill is up!
Enjoy

*Edit*
Well, There's now a YT video where someone claims to have found this glitch, although the date of this post was before the upload date of the video & he explains how to do it word for word as to how my instructions were written. He claims to have found it. Oh well I don't mind lol, at least I know I was the founder