My SSG PII serves me well shooting in 1000 yard NRA F-Class matches. The only weak point on the SSG 69 is the plastic trigger guard/ magazine well. I would certainly be interested in fixing that issue. Please sign me up for an aluminum trigger guard and make sure that it works well with the McMillan stocks.
I would buy one also! I may just take mine down to a local machine shop and see what they would charge per each. Aluminum is easy to anodize at home so you could customize it! I have polished aluminum loading blocks made on a CNC that are caliber specific and only $35 each. Perhaps I'll just contact the guy who makes these and get an idea. Nice blocks by the way and nice and heavy and hold cartridges very securely.