Um... 1 hit kill and 5 bullets per shot? "Heat" seeking missles/bullets. Able to follow the target into their house.

Then streaking would be near impossible. Even though streaking at the moment can be easy, you can't make streaking go from easy to impossible. With no doubt, streak happy players will soon go mad and complain about the new gun.

1 hit kill weapons are tricky to be put in era. If shotguns are players complaints, then 1 hit kill weapons isn't going to help. Despite it needs to lock on, imagine if many players have the 1 hit kill gun. 10 missiles are coming at you at once. Streaking would be a pain for the sake of getting at least 50 kills.

The weapon needs some balancing, before Snk and Meph can decide to put it into era. At least lower the damage but still do considerably high damage.