Effect of 発 in 発殴られる


I have the following part in a sentence:

> 増田に発殴られて

The 発殴られて is being translated as with one hit. So I can understand why it is
not simply 殴られる. But is 発殴れる a fixed term or is 発 a more common modifier such
as 出す in e.g. 歩き出す?

