CHAMP Clamp

Simple design using only 2 parts and existing stud as mechanical fastener. When the lock (red) is in place the stud is locked into position and will not slip out. Not to sure about the actual stud dimensions but the idea is conveyed. When stud pulls up on block it pushes against lock and rail making a mechanically sound connection. Although I see a lot of great rendering jobs, I concentrated more on the function. This is the only design I see in this challenge I could not physically rip off the rail with my bare hands or kick off, very strong. ....I updated design to allow mounting on either side.