so i bought the laser sight for the weathered 10mm pistol trying to get the weapon mods achievment and when i use that gun my whole screen gets a pink tint and the gun disapears but you can see the animation of my charactor holding the gun and it still shoots
The problem your facing is something in the GECK. Seeing as your Weathered 10mm is technically Unique, it has a seperate entry in the GECK. This means when they made it, they had to tell the game it would get the same model as the regular 10mm. The base gun is the same, but they never entered models for the gun mods, making the gun invisible once you add a mod. The floating diamond with a "!" in it is used when an Item is missing a model, mesh, or texture required for it to appear in game. Dont sell the gun if you still have it, just give the devs some time to patch it.