This mod is very simple. It replaces the Ancient Nord bow and the Ancient Nord Hero bow with the Breton Longbow. That's it. There's no plugin, so there shouldn't be any conflicts other than my mod's changes being overwritten by a similar mod, so if you use another mod that replaces the same meshes or textures, you'll need to install this mod after it or this mod  will do nothing. 

The Ancient Nord bow is replaced by cageu's Breton Longbow and the Ancient Nord Hero bow uses Mr. Dave's alternate texture.
I'd like to thank each of them for allowing me the use of their original assets in this mod.
Please check out the original mod Breton Longbow by cageu