Personal opinion, from what I have seen used .45 USPs going for with nightsites and the newer 220s with rails, it is too much. Even trade, pistol for pistol sure, maybe a little cash ~100 at the very most maybe would be worth it. But the Sig plus the light and cash I think you are getting screwed personally unless there is something I am missing about the USP.
"I don't collect guns anymore, I stockpile weapons for ****ing war." Chuck P.
"Some days you eat the bacon, and other days the bacon eats you." SeriousStudent
"Don't complain when after killing scores of women and children in a mall, a group of well armed men who train to shoot people like you in the face show up to say hello." WillBrink
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