

I do most of it in Nifskope and a little in Blender.

Most of your work, however, will probably be just repositioning the weapon. From people I've talked to here on the forums, you can use altered animations to help fix some weapons. The second problem, sights not lining up properly, is not as easy to fix, though. The fix is to uncheck "Don't use 1st person IS animations" in the GECK.

My only experience is with RogueHallow's Iron Sights mod, but do you mean some weapons only go into iron sights positioning while firing? If so, that's a common problem I've seen with weapons added by mods. The first problem also occurs with many custom weapons, and the second can only be fixed by just using a whole different set of aiming animations. Problem is, certain weapons (assault rifles mostly) are set up so they automatically go to ironsights while firing, and if you use a model with different sights it doesn't line up properly anymore.
