This is a posable action figure.
From the GoodSmile website:
Awake! Judgment Gunmorphing!!
From the anime series "Space Patrol Luluco" comes a transforming figure of the middle school student that lives in OGIKUGO--Luluco! The figure features Luluco dressed up in her Patrol Suit, but can miraculously transform into "Gun Mode" for a completely different appearance! Transform her in the name of Justice!
Luluco is about 13cm tall when in humanoid form.