Guys i need help finding this show

So there used to be a show i used to watch as a kid, its pretty modern bcs i was born in 2007, its a supersentai kinda kamen rider kinda show.

They used a rectangle like device to transform, the rectangle has a circle in the top left corner, the top pops out and they push the too back in place to transform, then they stow it into a slot they have in their breast pocket.

There are three main characters that i remember, the red one, uses a katana-like sword and he trains in a batting cage, the black one uses one or two guns in the shape of the letter U, the blue one was female. I think theyre wearing a cape too. Also They have megazords like mecha.

Ive just been feeling nostalgic about this show that i dont even remember the name, please help it would mean a lot to me.