.......this is my very first 1911.....a trip to the local gunshop which stocks lots of 1911 parts, made it very apparent that modding, or repairing the 1911 pistols are cheap, and easy. I like that a mainspring housing is only $20 for a steel checkered 30 LPI. Anyway, I've done nothing mechanical to it yet, but I did replace the grip panels with Hogues, and replaced the god-awful grip screws with hex-headed ones that are blued. It looks good so far; I do want a magwell though, and would like to replace the checkered plastic MSH with one of those 2-in-1 mainspring housing/magwells.....I think its made by a company called Smith & Alexander. Do MSHs require any fitting? If so, what does that task entail? Thanks for any input!