Yep, that's a typo. Gundam FM kits are all 1/100 scale.

Unfortunately, that is difficult to predict due to Bandai's reprint schedule. We suggest adding the item to your wishlist to receive a notification for any restocks!

It’s the WFM weapon base. You’ll need 2 to display all the bits.

Good news https://newtype.us/p/AoAfle3cDDUMgyC5y9lM/h/kosmos-led-upgrade-for-fm-gundam-aerial

The FM (Full Mechanics) line combines the scale and detail of MG (1/100) with more simplistic engineering (akin to HG). This means it has much less parts and no dedicated inner frame but is easier to assemble and still looks comparable on the shelf next to MG kits. Just don't expect the same level of gimmicks as a MG kit.

Full mechanics kits are basically scaled-up HG-level kits. However, this particular one is a lot closer to the RE/100 line, which consists of models that are too obscure or difficult to make an MG of. Both Full Mechanics and RE/100 kits generally lack an inner frame and cockpit, but the newer Full Mechanics kits (this one and the Seed trio) and most of the RE/100s also come with MG-style highly detailed parts so they look great alongside proper MGs (and even better than some of the oldest ones!) whereas the older Full Mechanics kits don't have anything nicer than a basic HG and some even have to use stickers for color correction. In other words, Full Mechanics used to suck for a while, but the new kits since 2020 and the most of the RE/100s are great. The downside of Aerial getting a Full mechanics kit is that it's likely going to be a while before an MG comes out, Barbatos got a FM in 2014 and an MG in 2019, so if the length of time is the same (if not longer since bandai barely does new MGs anyways) the earliest we MIGHT see an MG would be late 2027, but WFM is just so popular that they may go for it early anyways. Still, if you like Aerial, this kit and the MGSD are probably going to be the best things out there for a while.