Is there a place i can check how many medals have been earned on weapons?

Like, if i wanted to see how many players auraxiumed a gun

For example it shows there are 7000 auraxiumed orions or whatever

I can give you an indirect way. You can go to dasanfall and check the leaderboards for a weapon. Anything you see there over 1000 kills is probably auraxiumed (dasanfall has the tendency to count less kills than the ingame counter).
For example: http://stats.dasanfall.com/ps2/item_leaderboard.php?query=1894

Alternative and more accurate would be a site that could count the weapons directly, but I'm not aware of one.

so the KPU column is the one that id look at for the number of auraxiums?

No, the pure kills. You're looking for 1160, but really, anything over 1050 is probably an auraxium.

ok so its the leaderboard page for whatever weapon, thanks