I have a Springfield Armory "GI" model 1911, the base-base model. I would like to make the changes outlined below, and want advice on any special pitfalls. Before I get "just buy X" replies, let me note that I own a couple of "X" which come from the factory with many of these features. I want to learn how to do the work below, in addition to getting the end result. I know it would be faster and possibly cheaper to just buy a higher end model that already has these. That's not my sole goal. Second, I should note that I've previously fitted and installed a replacement thumb safety, so I'm not a complete stranger to working on a 1911. But I'm not an expert either. OK, here's what I want to do: -Replace stock backstrap with a flat one and standard spring arrangement. From what I've read this should be easy. I think I did all the same steps when fitting the thumb safety on another 1911. -Replace stock trigger with an extended type trigger. I understand this might require some fitting of the new trigger within the frame. -Replace stock hammer, sear and disconnector with new parts. My main reason is to get rid of the long spur on the hammer that gives me occasional hammer bite. I wouldn't mind if improved trigger pull comes with it, but that's not my priority. Since the parts are relatively cheap, I figured replacing all three would make sense if I'm replacing one. The all-Brazilian GI model seems to have fairly rough/crude lockwork. -Replace thumb safety - I've done this before so I know I can do it. -Grips. Ditto. -I'm debating beveling the magwell for easier mag insertion. This would mean cutting through the parkerizing and then painting it when done. Not sure about this. I would greatly appreciate comments from people knowledgeable about these items - are there hidden difficulties, or is this all straightforward if I read up and take my time? Please, only comment if you actually work on 1911s (I don't care whether pro or amateur). Thanks in advance!