Has ADB ever established an origin for the Orion Raider? It'd be interesting if they were actually retired hulls from one of the major governments (say early or even pre-Federation spaceships) acquired through questionable deals and refitted with new systems. One might even see one or two old CLs refitted in such a fashion.
The Orions fielded their own 'racial' ships in their planetary fleet - as did the other major member worlds (such as Earth, Vulcan, Andoria et al) - and under the byzantine deal the UFP signed to get the Orions to join (and thus turn the tide of the war against the Romulans) the latter had far more control over patrolling their home Enclave than other members had.
Indeed, the year (Y113) the planetary fleets were formally abolished (and replaced with 'National Guards' which originally inherited the racial ships, but eventually received older unified-design Star Fleet ships) sixteen Orion ships and thousands of Orion officers 'mutinied' and became the core of the first Orion pirate cartels.
However, it was only after some time that the first raider-type vessels were built (as opposed to relying on ex-Orion naval ships) - out of asteroid shipyards in isolated systems, and not at all on Orion itself, oh no, absolutely not...
The SSDs for these early Orion ships are in SFB Module Y1, and there may be more in the upcoming Y2 release, though I am not too sure.