Sai S-4X

The Sai S-4X is a 40-ton fighter flown as a fast dogfighter. Where the S-3 mounts a Large Laser in the nose, the S-4X carries an ER Large Laser there instead, and the four Medium Lasers split between the wings on the S-3 give way to a single Medium Pulse Laser in the right wing and another in the left wing. The design moves to an XL engine and Ferro-Aluminum armor in place of the S-3's Fusion engine and Standard armor, and heat sink count rises from 14 to 21 single heat sinks. Wakazashi Enterprises builds the type at Schuyler.