They natively produce the Vagyr and Sleipnir APCs (which are really heavy and medium platoon to company size transports), and the descriptive text on Mechdur says it produces everything from consumer goods to Mech weapons. Several of the other planets are heavy mining colonies or agricultural worlds, and there is a lot ot stuff in Panzyr's orbit that could be reverse engineered, even at the basic 3025/Introtech level. I don't see lasers being any harder to make then large bore autocannons that have be stabilized on a bipedal chassis or missiles requiring a variety of speciality sized tubes in order to launch them.
Most likely they can produce any stock 3025 weapon, other then large amounts of PPCs, and the Coalition buys, builds or salvages the simpler vehicles like LRM carriers, the APCs, and so on, while the newer equipment such as Devastators come from other nations of sources via trade or salvage.
So I see the following: The AC can produce ICE equipped units with stock Introtech weapons and repair fusion powered ones, but have to buy/salvage fusion powered mechs and vehicles due to their lower tech base.
Missile and other weapons carriers, hovercraft, medium/heavy wheeled and tracked tanks (Hetzer, Bulldog AC), etc would dominate, and heavier designs would be relegated to line units supporting Mechs and the Royal Guard.