[With the colt, you cannot weld it. It just slimes way too much. super glue or epoxy won't work. You just have to wedge it between two rocks or an opening in a rock and hold it there so it doesn't move for about two weeks. It will attach itself to the rock. I would wedge it in a hole in the rock and use another rock on top to hold it and use a rubber band to hold the rocks together. If you use a rubber band to hold the colt, I've found that it will slice the colt.
HTH]