[url]www.sableco.net[/url]
M951P MU System, 6 Volt, Momentary-On, Thumb Screw Mount $202
[url]http://www.san.surefire.com/cgi-bin/main.pl?pgm=co_disp&func=displ&carfnbr=135&prrfnbr=515&sesent=0,0[/url]
There is also a version of this light with ARMS throw lever instead of thumb screws for a bit more money ($45 more).
P61 Lamp is 120 Lumen instead of the P60 that comes with the unit which is 65 lumen. P60 runs 60 min vs P61 which runs 20 min. The thing you will notice most is the larger central spot of light and it reaches out about 10m further. Its not especially brighter indoors though. P61 cost from Sableco is $19
[url]http://www.wilsoncombat.com/store.cgi?&shop=city&cart=94197477x91330&session=3eb7deb164c256e5&L=eng&P=TR-LM[/url]
The only way to get the Wilson light mount is through Wilson or one of its dealers who still charge the same as Wilson, but its a nice mount and similar mounts are equivalent in price. It comes with its own mounting ring which you may or may not use.
If you wanted to go less expensive you could go with a 6P $62 which is aluminum but not anodized, shock isolated nor seperates the batteries from the lamp. Then buy a Z32 shock isolated light bezel $16. You would use the ring mount that comes with the Wilson mount on this set up.
Or you could go with a G2 Nitrolon polymer light which would be the least expensive and lightest way to go, $30 with no shock isolated bezel available.
Also consider training with regular Surefire batteries but using a 6V battery stick to keep in your light for "serious use" to keep the batteries from destroying each other over time.
I would go with the Millenium light for the extra money though as the batteries of the 6P and G2 can crash into the lamp assembly and destroy it which cannot happen with the M951P as it isolates the lamp from the bulbs. You have spent a lot of money getting all the best stuff for your rifle, dont go cheap now. [:)]