What optics (TIR's) are there for a D cell MagLite?

I’ve seen some of OL’s builds using a multi TIR optic that fitted the Mag head perfectly. I can’t find these online, anyone have a link?

Following on from this. Can you get large single TIR optics to fit a D cell Maglite? I really love the TIR’s in my lights that have them and it’d be great if you could get one for a Maglite.

Thanks.

How about the Ledil Crystal that Hopback found?

I’d love to try one out but I don’t think that they’re available yet. Gaggione does a large diameter TIR optic too.

There are 50mm 3 led tir on fasttech and also you can check the mr16 light bulbs.