Hey Humbo,
First, you might want to review the FA97 OAL Thread close to this one.
You asked us to spend some money for you so here goes. First, do as Mark said above, and order some different height front sight blades – you might want to consider the fiber optic ones – they make green and orange (and maybe other colors). The FA fiber optic has a unique profile which I like a lot. I use the fiber optic fronts with the standard square notch rear – see picture below.
Second, if you are at all interested in red dot sights, FA has a great mount that is made specifically for the Trijicon or JP Enterprises optic – makes for a very low profile setup. See Picture below.
I’m partial to Octagon barrels and Black Micarta Grips. These are very personal options (and expensive in the case of the Octagon bbl).
One last consideration is a fluted cylinder -- I like the fluted cyl, but again to each his own.
I wouldn’t spend any money on the trigger over travel screw on the M97.
No matter how you outfit the M97 .45 Colt, I think you are going to really love it. Wouldn't think of parting with mine.
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Enjoy,
Paul