The rifle is beautiful and like the others said its hard to criticize something so nice. What is GRS? All that I know I have learned from others and am far, far from anything close to being an expert. If it were mine and I could change anything, I would shrink the lock mortise down by about half. Here is a question for you and the forum, is the silver patchbox accurate? I have no idea, I just know that I have heard people say that german silver wasn't used much till later, although for pieces like the cheek piece I have observed them, so where if any is the line? What process do you use after carving to clean out the relieved area? I have struggled to get those areas smooth. Your rifle in those areas looks perfect. Have a great day.