The RTLS is a rail-based Tactical Laser System.

Control:

AG-1: Parking Brake & Cannon
Throttle: Cannon Elevator
Yaw: Cannon Rotate

History (Stragereal):

The RTLS was developed by Belka in the 1980s. It was developed to protect the surrounding airspace of the Excalibur system in Tauberg.

Four RTLS were known to be deployed. These were based on a network of railroads built around Excalibur's position, which included underground sites. They were armed with a laser cannon capable of 360-degree rotation.

In the Belkan War, the RTLS units were deployed to protect Excalibur against invading Allied Forces. All units were subsequently destroyed. -ACEPEDIA

Note:

• Instead of laser, i choose cannon instead. The cannon velocity and diameter bassed on Krupp K5 Railway gun (The RTLS bassis).
• You need an engine to move this gun, it cannot move by itself.
• Engine not included.

Thanks for:
- @TheSlimeInATor
for the request a railway gun 3 mounth ago. Sorry for the long wait :-).
- Everyone who Comment and Upvote ;-).