The Sabre is the primary main battle tank of the UCM, and forms the core of its armoured spearhead. It is a lightweight, low profile design which mounts a formidable UM-100 'Avenger' railgun on a folding turret armature. This makes the vehicle eminently suitable for dropship operations, as well as highly flexible on the battlefield. The gun can be raised to a height of 9.8 feet (centre-bore), giving the Sabre the ability to fire over obstructions while keeping the hull in cover.
Its single crewman operates the Sabre from a prone position deep inside the hull. This configuration protects the driver, and allows the body of the Sabre to reach a mere four feet in height - an excellent low-observable configuration.
It is a highly economic and flexible design, and has been procured by the thousand. Its distinctive profile is a common sight across all theatres of combat, projecting the UCM's power onto diverse and myriad battlefields.
The Rapier utilises the Sabre-type hull to mount a fearsome UM-28 'Vindicator' Gatling cannon on a similar folding turret armature. This makes the Rapier an excellent anti-air unit, where the rapid traverse of its turret system can track fast moving aircraft with ease, while sending a hail of shells towards its target.
The vast reserves of ammunition required to feed the Vindicator are stored inside the hull and fed to the weapon via a complex internal path. The Rapier utilises a far more modest power generator than the Sabre, freeing space for this purpose, since the UM-28 has minimal power requirements.
The Rapier can also turn the Vindicator on massed infantry formations firing in 'wide burst' mode, causing unbelievable carnage. This is achieved by rapid, tiny movements in the weapon armature, intentionally reducing accuracy but causing widespread devastation downrange.