It really is. It’s the only thing that has no counter other than using it (edit: this was poorly phrased, better is, “one of the best counters is using an Erentil yourself.”)) And the range it can one shot is game breaking. With Magazine perks such as Under Pressure and other stability enhancements, it can outgun other weapons at 30+ meters. This outmatches the range of every special but snipers, but for obvious reasons, they leave you vulnerable. Other fusion rifles seem to be in check, but for some reason Erentil FR4 is exceedingly effective as a weapon. With scavenger perks, players are able to use this weapon as a main weapon without needing to use anything else. Yes. I’m whining. But it’s also ridiculous.
Edit: So many people are upset that I’ve targeted ONE weapon. Guys. If it’s so easy to counter, why are you trying so hard to keep it as is?