I broke one off in the middle of a stage in a competition last year. Accurate Ordnance cleaned the old solder off, put two screws in the handle to locate it, and had a local company laser weld it. Turnaround was just over a week including shipping both ways. I don't remember the price now, but it was significantly less than expected.
Btw, the match was a team match, I grabbed my partners rifle and finished the stage- and we ended up with the fastest time.