It sounds like a good idea. A MML for the Sub Cap. With all the Warships being dead, Sub Cap weapons would need to get a modification.
I've said it before, and I'll say it again; the canon universe is full of examples of places where existing technology could be altered only slightly and be used elsewhere. For example, it should have been weeks before the IS had a HAG system in development. And that example could stretch from a BA-sized weapon to a Capital weapon.
The AR-10 has existed for a long time, Sub-Caps roughly 70 years or so until the current in-universe date, but there has been no mention of it. Or, for that matter, S-C Gauss weapons. There are points either way - I don't need a weapon list that covers another page, for example.