4 pieces in a box puzzle

Easy looking puzzle where you need to place 4 identical pieces into a box. That can't be too hard, right?

The box is made of two separate halves to avoid any support structure. The halves are joined together with a precise joint but require glue to stay together.

Please note that the pin of the block required support.

No AMS required.

Try first to solve it yourself but in the case you get stuck, there is a video showing the solution.

4 pieces in a box puzzle - solution