Lou Williamson

The gunsmith (Lou Williamson) also built up the small thumb safety into a slightly extended one, bobbed the hammer spur and did a trigger job on the gun...which already had a decent trigger out of the zipper bag it came in.He fitted a then-new Barsto barrel.

I'd have to check my records, but around 20 years ago, gunsmith, Lou Williamson, did this pistol for me.

I took the pistol to Lou Williamson, a gunsmith at Knight's Gun Shop in Ft. Worth, Texas to be customized.Lou bobbed the hammer spur, made an extension for the small thumb safety and machined the slide to accept S&W K-frame adjustable revolver sights which was just the thing back then.
...
Even though I couldn't outshoot the gun with the existing barrel, I had Lou fit a then-new Bar-sto stainless steel match barrel to that pistol and hard chrome the whole thing, guts and all.Only the stainless steel barrel was not refinished.I still don't know why, but Bar-sto barrels for the Hi powers at that time were a full 5" long so to this day, that Hi Power has sort of a "Beretta look."I've been meaning to get it cut to proper length and recrowned for about 30 years now.These early Hi Power Bar-sto match barrels were also made from one piece of steel rather than two. (I've noted no improvement in it over the more conventional two-piece barrels.) Lou also made and silver soldered a serrated ramp front sight to the slide, complete with a red, plastic insert like some of the Smith & Wesson revolvers.

Shown with the stocks that came on it, this is my first Hi Power and one that's still used today.This one has been with me for over half the time I've been alive.It's affectionately known as "Number 1."

From the left side, you can see the extended thumb safety made by gunsmith, Lou Williamson.

I chose the cast frame as it cost less and I've had stellar results with a Colt/Caspian 5" gun that my gunsmith, Lou Williamson, did for me in the '80's.

Gone are the smallish, military fixed sights; they're replaced with a melted King-Tappen rear sight and a serrated ramp front sight, silver soldered to the slide by gunsmith, Lou Williamson.It's been zeroed by me @ 15 yards for Winchester 230 gr ball.

Lou fit a thicker than normal bushing to the slide and bbl of the pistol.He left the bbl 0.582" for the last quarter-inch the bbl, but turned down the rest to 0.571" so that the bushing's fit was really tight only for the last quarter-inch of lockup.
...
Though common now, the ejection port was lowered and "scalloped" by gunsmith, Lou Williamson.

Gone are the smallish, military fixed sights; they're replaced with a melted King-Tappen rear sight and a serrated ramp front sight, silversoldered to the slide by gunsmith, Lou Williamson.It's been zeroed by me @ 15 yards for Winchester 230 gr ball.

Lou fit a thicker than normal bushing to the slide and bbl of the pistol.He left the bbl 0.582" for the last quarter-inch the bbl, but turned down the rest to 0.571" so that the bushing's fit was really tight only for the last quarter-inch of lockup.
...
Though common now, the ejection port was lowered and "scalloped" by gunsmith, Lou Williamson.

Ammunition: Today, the pistol was fired with 4 different rounds.