Welcome to the Dark Side.

Top to bottom, we have:

1: Unfinished MK. 13 Standalone. Forgot to customize it when I saved the image. I'll upload the customized version with name next.

2: Raining Blood submachine rifle. A breakthrough prototype weapon combining the versatile MP5 Navy with the long-range killing capacity of a sniper rifle. Silenced version portrayed.

3: Mercy's Touch sniper rifle. Not too customized, but I still like it a lot. Default version portrayed.

4: Poison Envy: Prototype assault rifle with patent-pending scope-to-holograph sight attachment.

5: The Exorcist: After years of studying the effects of bullet rifling and recoil shift, KrinTech has developed the perfect rifle for military and police combat situations. This weapon is truly a winRAR.

I'm not really one to imagine all the schematics and specifics and whatnot for these(but sometimes it's fun to make that stuff up too). I just like making them.

Credit to: pimpmygun.doctornoob.com