SF weapons light?

Anyone know if I can put a standard tail switch on this?

It looks like a 660 weapons light but a single cell. It's pretty short.

I found this:

https://www.ar15.com/forums/ar-15/Surefire-660-6P-Secret-Tailcap-Mod/20-752340/


I think this depends on what the body tube/ "collar" is here. This does look short, like it is missing an A12 extender or something. Most 660s were I believe supposed to be used with the tape-switch compatible XM tailcaps. I have seen 660 style lights lego-d to take standard "c" tailcaps, but most of them use XM/ tape switch compatible tailcaps.

AFAIK, the fully built in tape switches like the ones that are nitrolon are standard C threaded, because they will make any Nitrolon light into a tape-switch light.

Sorry I couldn't be more useful here, but I've done a lot of digging on SF's WML lights particularly legacy editions recently, this is all I can think to type for you here....

Thanks dot. For what I'm getting it for couldn't turn it down. I'm just really wondering if this is a one cell unit and if I can put a standard tail on her should be very similar to a 3P. Never had one.