Type-4 turrets are basically the same as PG turrets in terms of damage and range, just slower refire and require way more energy. Six type-4 turrets will track and down a bomber that doesn't move, same as the PGs, a little more effort required but its close to the same.
![[Image: smuggler-threat-0-1.jpg]](http://i183.photobucket.com/albums/x57/UrsusMorologus/Freelancer%20Discovery/smuggler-threat-0-1.jpg)