Help needed please, should be easy

I am using munitions mod to get a bunch of extra guns that were not originally in the game and among them is a revolver called The Walker revolver. it was purchasable and working perfectly fine all around until I got catalog improvements, gunslinger improvements, elegant suit restored, and real name for munition guns. now every single time I tried to purchase it the gunsmith never hands me the gun and the game soft locks. It has to do with one of these new mods I listed because it never done that before. Help is needed and thank you all.