Even if there are images, that suggest, that printing works, I can not guarantee it, since the rate of success in printing seems to be purely arbitrarily.
The fr5G by GRAIL Shipyards is one of the most feared Escort-Ships from the lower range. Since GRAIL Shipyards is exclusive holder of the Gravrail patent, and this ships come regularly issued with one, It's pretty popular among the Space Force and wealthier Colonial Guard regiments. Both fractions use "Comtrains" as fast deep-space patrol forces. Tough, trough the inflexibility of the Gravrail drive system, limits the fr5G to mainly defensive duties.