Most things like this can be repaired .But without seeing it, the actual position of the break ,I would be a little hesitant in saying weld or braze .
I have done both and have always advised that it is a repair and there will always be an uncertainty as to how long it will last depending on the amount of use it will get . Some times cutting the head off leaving an inch of the original leg and grafting a new lower leg may be an option .
The type of ejector work and leg length may also be a consideration as to the kind of repair as some types put greater strains on the legs than others when the ejectors are re- cocked .
