I just bought the authentic Shotgun mod from Emit Vapor and let me tell you, I am highly devastated. I went to my car to put in a battery in the new mod and found the floating pin looked burnt. I returned to the store and asked them if I can take a look at the pin from their display case. The pin from mine compared to the one in the display case was way off. The pin looked like it was burnt at the bottom and top of the pin. The only thing that had silver plating was just the middle portion. Mind you this is what I only found when I was still outside the store. Getting back to my place, I found out that "all" the threads had black residue, it took me a long time and a lot of Qtips to clean. The threads had black debris like you would find on a mech that has been used for a while with out cleaning. I then decided to do a voltage drop test and that even made my heart sink. The test was between a cloned cooper 4Nine versus an authentic Shotgun Mod, using a Plume Veil RDA. The Plume Veil RDAs build is (.22ohm) 26ga dual parallel coil. The results were from a fresh battery, the Shotgun had a .77 drop and the .42 drop. Thats a .35 difference between an authentic versus a clone. Having spent $216 even though it was $220 (military discount), I was devastated that a clone performed better than an authentic.