Does the S21A lens fit in FW3A?

Flashlight Modding and DIY Parts
1

Both are very similar in size:

S21A/S21B lens: 23.2x1.4mm
FW3A lens: 23x1.5mm

If anyone has both can you please test it out?

2

Hi Azirine, and welcome to BLF!

I have only the FW3A and I can tell that there is (most probably) no margin for a larger lens. There is no “play” between the lens and the place where it sits and almost no space between the lens and the bezel threads when putting it in place.

But maybe someone who has both lights can tell you this in a more accurate way!

3

Nope

4

Thanks!

5

I have some that fit in my sample. All about the tolerances when things are this close