Sentinel M16 Telescoping Mechanical Mod

My advice is to stay away from this item. For starters, it comes unassembled with no instructions. I had to look online to figure out how to put the parts together, which I did. It vaped pretty good for 2-3 days, and then this happened: the firing button got unscrewed and popped off, along with the spring. I couldn't find the spring, so I tried screwing the parts together without it. Big mistake! Just using my fingers I screwed the pieces together so tight (soft, cheap metal) that I couldn't unscrew them to put the spring back in. I took it to a hardware store, and using a vice and pliers, they couldn't unscrew it either. So now I'm stuck with this thing. There are mechanical mods out there that don't have these kinds of issues - I know because I have one (made by Kamry). Note from SmokTek: We have refunded the customer for the Sentinel M16 Mod.