No, but I put some on my P40 and am very unhappy so far. I had to remove so much from the bottom of the base on the front sight that the overhang front and rear sat on the slide and prevented further adjusting until I filed some of the overhang off... and the sights still shoot low for me!
The rear sight was so loose that I could push it in the dovetail and it would just fall out with the slide turned 90° to the right. The two set screws and the included thread locker keep those in place.
If I use a pistol rest and dot the "i" and cover the bullseye, the rounds seem to hit dead center, but I can't aim offhand or "point" and hit higher than the bottom of the bullseye... about 4" or more lower than my G23C with similar shooting and double taps. I'm about ready to pull the Big Dots off my P40 and try something else. If Trijicon made HD NS for the Kahrs, I would already have them! I've thought of trying to make the 1911 ones fit with a little modding... which voids the warranty!
Wynn
USAF Retired '88, NRA Life Member. Wife USAF Retired '96
Avatar: Wynn re-enlists his wife Desiree, circa 1988 Loring AFB, ME. 42nd BMW, Heavy (SAC) B-52G's
Frédéric Bastiat’s essay, The Law: http://mises.org/books/thelaw.pdf
Thomas Jefferson said
“A government big enough to give you everything you want, is strong enough to take everything you have.”
and
"Peace is that brief glorious moment in history when everybody stands around reloading".