That was my first impression as well. However, after using it, I found that after the transformation, the weapon is not useless and enjoyable to use. On the other hand, the weapon before the transformation is weak and has only a beam weapon, which is also a weak point. I recommend you to try it once.
迦樓羅武裝設定有點怪XD
感覺武裝能換成（以下）
武裝前：步槍 胸炮 龍騎兵
武裝後：雙刀 雙刀連擊 龍騎兵（近攻）
There may be an implementation in the future at the SR rank with the weapon configuration you describe.
雖然是雙專用技+6武器，但泛用性與真實還原度低，遊戲內強度也愧對SS這個等級。
That was my first impression as well.
However, after using it, I found that after the transformation, the weapon is not useless and enjoyable to use.
On the other hand, the weapon before the transformation is weak and has only a beam weapon, which is also a weak point.
I recommend you to try it once.