Driver Spring used in FW3A?

Happy new year BLF community!

Here's a quick question I'd like to ask to see if anyone knows the answer to: does anyone know specifically which spring the FW3A flashlight driver uses? It is a small 7mm to 5mm spring, appears to be silver plated (possibly copper or bronze wire), 0.8mm wire and approximately 3 turns and fairly low profile?

Is this something that can be purchased (spring only), or is this a custom Lumintop spring?

Here's a photo for reference, taken by CRX: https://i.imgur.com/aLSudXS.jpg - You can see a picture of the spring I am referring to.

Otherwise, can anyone recommend a similar spring with similar characteristics?

Many thanks to all.

I’ve no idea what the FW3A used and have no idea what these springs are like but may suit your needs.