Thanks to the brilliant minds of Corneria's Space Dynamics Co., Ltd., the KB-J/C-412 is the heavy bomber workhorse of the United Galactic Army, capable of both atmospheric and space operations. With a load of 16 B-25 bombs in its four bays and four Cleaver Mk.5 missiles, the 412 has folding outer wings so as to take up a little less space on a carrier, making it a (somewhat) compact heavy hitter for dealing with everything from armored columns to enemy capital ships. Unfortunately it struggles as a long-range bomber, and its lack of point-defense weapons mean it needs a fighter escort into combat, otherwise it's a helpless and rather juicy target.
Groups:
1 - Bomb bay 1
2 - Bomb bay 2
3 - Bomb bay 3
4 - Bomb bay 4
(NOTE: Bombs are attached to detachers. Pressing the corresponding arm group WILL DROP ALL BOMBS IN THAT BAY.
5 - Cleaver missiles
(NOTE: I recommend firing the Cleavers this way just so their fins extending don't throw you off. Launch is delayed by .5 seconds.)
6 - Folding wings
7 - Arrestor hooks

P.S. Now that I look at it, it kinda reminds me of the AS Mini-Guppy. Look it up.

(Updated. Wings have additional folding points)

Larger tanks variant: https://www.simpleplanes.com/a/yZcF5T/KB-J-C-412-Bomber-Bigger-tanks
2 engine variant: https://www.simpleplanes.com/a/8K8N98/KB-J-C-412-Bomber-2-Engines