I bought the FO front sight and installed them myself, once I bit the bullet and bought an armorer's block. I went to the range today and stunk. Great sight picture, but I stunk! Poor trigger work, anticipating recoil and not controlling my breathing. Things were better as I went along, but jeez, I acted like a newb. I actually shot the XDm .40 more accurately. And it is my least favorite to shoot. Nevertheless, just chalk it up to a bad day. Better days are ahead! I know what the pistol is capable of doing, now to get my butt in gear.
Thanks, Hillbilly for recommending the sights from CGW.