Fixing it is not a big deal, but re-bluing will be required. If the GS uses cold bluing it will wear off in short order. I guess that it was just not fit correctly when the gun was made. That's a shame too because it looks to be a real nice one. The only proper way to fix it (being that it's a blued gun) is to ship it to the Factory, let them properly fit the part and refinish.