Here is a savegame with all the E-tech games in the game. Of course not-modded. Some I farmed them myself, some I found in the NET, some I picked them up from the Golden Chest using a 255-gold-keys profile.
Most difficult ones was the Rocket Launchers but the PBFG (they do not show up in the Golden-Chest).
All Brands/element variations for Assault Rifles, Shotguns, Sniper Rifles and SMGs
All Brands and most of element variations for Pistols. Rocket Launchers but PBFG has only one variation (Topneaa has two), too difficult to find more (of course all four Brands are Included). If needed you can use the SaveEditor to make your own kind and change the elemental effect
You can find a list of all the e-Techs here:
https://borderlands.wiki*****m/wiki/E-Tech
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