You can reach Halo's website here:
http://www.halomfg.com/
T&S is here:
http://www.99main.com/~heavymg/
Best way to reach either is telephone. I think I just got the last LSPs from Halo's last run, but he will be doing more. Not sure on T&S as to current stock.
However, if you can use an Israeli LSP, complete with cams and belt holding pawl bracket, in very good condition, let me know. It has the 308 mods of course, and no rear sight bracket is included. I have several and will take $75 for one. Just FYI.