Only high impact snipers with final round are OP. I leveled up a final boss with AP rounds and final round, expecting a one shot kill to the body. No such luck. Its close, but not a kill. And AP rarely seems to be that effective. So, in general, no. They are not OP. Efrideets spear is a great sniper in both PvE and PvP. No need to fix what isn't broken. Edit: just saw how old this post was, never mind I guess. AP rounds got nerfed since then lol.