The is braxias prototype form and as such is how its found in the story before its complete

Here are its specs

LEG THRUSTERS
It has standard thrusters on the back of its legs but also has some lower power one s on its feet to allow it to hover along the ground and well as fly.

PROTOTYPE BEAM RAILGUN
the prototype braxia is equipped with an early production version of the beam railgun as such it has lower power output and smaller versions of the blade like parts that help with infusing the beam with quantum particles

PROTOTYPE BEAM SABER STORAGE
The beam sabers on this machine are stored in the shoulders unlike its completed form which stored them in the backpack holsters