Yes, Sheares is the only authorized distributor in Singapore for SureFire.
Their next shipment as far as I understand is ETA end of October or early November. I keep in contact with them quite closely as I've known some of the guys there for as long as I've been collecting SureFire lights (coming 7 years ish?).
If you are unable to wait, you always have the option of purchasing online where stock is pretty much limitless
Another alternative is you can contact me in the CPFMP where I have one brand new and as good as unopened for sale (opened simply to verify its contents).