NEWR VERSION HAVE ROUND TRIGGER GUARD
Parts available through EAA and Brownells (
www.brownells.com).
I have both the EAA Supersight and a Mec-Gar adj; prefer Mec-Gar (but had to enlarge notch).
Some thoughts: if buying top end recommend Long-Slide versions, BreakFree CLP and TetraGrease, factory mags, Wolff springs in mags and recoil, factory rubber or wood grip panels, rounded trigger, narrowing front sight blade to .100" (will require machining), and spare slide stop (have NEVER broken ANY parts, but heard many stories about slide stop LOL).
Oh, and they need very little cleaning, although mine rust. My fault, of course, but it should be mentioned LOL.
FYI, have two 'small' frames and one 'large', small capable of switching to 9x21, 40 S&W, 41AE. My large came as 45 but I added top in 38 Super. These three give me test beds in listed calibers, plus similar manual of arms for ease of carry or competition. They also fit the same holsters.......