Why are the two S1 guns listed as fixed mounts when it appears they're on a gimbal at the end of a wing?

We really wanted to showcase just how big of a coverage angle the Wing-Tip turret would offer. Once it's in your hangar, it'll be a Tractor beam on the Turret with the S1 guns on the wings. Also, we're already planning to make the Twin-mount Turret an available option through REC/VD when the Reliant is made flyable.