If you plan on doing it multiple times and want a quality tool you should look into the Burgeon Spring Bar Tool. It’s expensive but I’ve found that it’s better to buy a quality tool to work on your hobbies with rather than a cheaper option that may break or damage what you’re working on.

If that’s too expensive, this one is made by the same company and is almost 10x cheaper. It just does one side at a time instead of both