.
I also found out swapping the reflector in the HC30 with a TIR is a very simple mod!!
.
It was posted by X3 in the review thread (discussion starts here on post #14): Nitecore HC30 1x18650 battery,Cree XM-L2 LED,Headlamp REVIEW - #14 by X31
He swapped the reflector with a 60 degree wide angle TIR diffuser lens, it’s basically a drop in swap, he only needed to grind some around the TIR to fit.
It looks like the photos disappeared from the posts, but I found these photos on X3’s public album:
.
Beamshot with reflector (before):
.
With 60 degree TIR/diffuser (after): Goodbye hot spot!
60 degree diffuser TIR @ fasttech: https://www.fasttech.com/products/1606/10007055/1574903
Looks like Convoy shop has them too: https://www.aliexpress.com/store/product/LED-lens-for-CREE-XML-XML2-LED-60degree/330416_1577614278.html?spm=2114.12010108.0.0.e76b47drqNnyp
I’m pretty sure I have the exact same 60 degree wide angle TIR diffuser (I also bought it from Fasttech), I’m going to try and dig it up and do the mod on mine, I’ll post about it here when I do.