OK, I found out what I had wrong, and where I wasn't applying the construction rules properly, so now I'm good to go. Everyone for the 53rd is done, and all the small arms are wrapped up except the kit fielded by the scouts.
IE --
Light Infantry can field the vanilla assault rifle/underslung GL tandem combo weapon; or a Ruhr-Mekanik semi-auto shotgun. The sidearm is the Rossman MK VII pistol or a persistent smoke grenade. Upgrades include satchel charges or banner bearer.
Heavy Infantry have the same SDP-9 assault rifle. Or they can pack a LeGranche Industries anti-tank rifle. And as they're meant to be deployed in defensive positions, partnered with heavy weapons, the upgrade is "targeting computer" used to feed firing coordinates to any attached weapons team packing the MPMW Mortar. I like that one, even if it is overkill. Ton of IR as the idea is that the round splits into mini-munitions, which follow the firer's digital feeds straight into the target. No suturing here as most successful hits will result in the target, even one with a good bit of DC, being turned into hamburger.
I have the spec ops troopers who are flight capable, and the battalion intelligence officer, who has a cone-template terror weapon he can fire at nearby Sheetok. His upgrade is Data Net. And the scout, once I have his kit finalized, will have refractive cloak.
Other weapons include a Heavy Plasma Gun and the "Seraphim" Autocannon -- dubbed with that particular name because its targets are soon singing with the angels. Topped it off with the panzershrek anti-tank weapon.
I'll post the file once I get all the notes typed in, and the fluff/descriptions wrapped up.
Here's what I have for the light infantryman..
The typical "Blood and Mud" frontline infantryman, this soldier comes equipped with the standard assault rifle with underslung grenade launcher or the infamous Ruhr-Mekanik shotgun when assigned to special assault/urban pacification missions. Hard-bitten and cynical, the average grunt doesn't necessarily buy into the Party line, but is aware that his own actions against the Sheetok have rendered any regrets or crises of conscience irrelevant. He's also enough of a realist to know that his lieutenant, while full of grand ideas drawn from the Academy, is painfully green and destined for promotion to a staff position the moment his potential is realized. Direction and guidance, therefore, is almost always sought from the platoon's "top" - a grizzled and paternal NCO who's seen it, lived it and done his best to forget.