This seems as good a subject as any to begin a debate on this Forum. After all, I can't think of another gun out there that has as many parts, both good and bad, available for it as does the 1911.
What are your experiences with aftermarket parts? What've you found that works well in your particular application, and what has turned out to be a horrid waste of money?
And, while on the subject, how many are familiar with the SM&A-coined acronym "BOPOS?" (grin)