I "upgraded" my Victory last fall with TK parts with mixed results. I usually trust Volquartsen for my .22 upgrade needs but they had little for the Victory. TK seemed to be the only game in town at the time so I gave them a try.
Here are my thoughts based on mods to that one gun:
-The Hive grips I really liked. They fit well and give the gun a fuller gummier grip. I really didn't mind the factory grips, and a set of Talon Grip Tapeset would have made them even better but the Hive grips really changed the feel of he gun completely.
-The Trigger I don't care for (and pulling it out is on the "to do" list). It looks cool but it's performance is way over stated. Specificly, while it does drop the trigger pull weight a little, you'll only get a pull close to their specs if you test in the bottom 1/8"/tip of the shoe. ( Read: Impossable to do unless you have the fingers of a 2 year old..) When I contacted TK to see if I had a bad kit, they said that was how it was measured (and their YouTube video backs that up.) I also feel the trigger now feels less crisp. Lastly, the video instructions were actually missing a section to cover the addition of a trigger bar capture screw that was not in the origonal version.
-The Extended Mag release is also not very well designed. While the larger paddle is nice, it's actually too tall/extended . So much so that if you lay the gun down on it's left side, it ejects the mag. Being that it stuck out so much, I found it was easy to accidently engage it while shooting. I feel the design was not well thought out ( even if the fit and finish of the parts were good.) I ended up sanding 3/32" or so off the shaft to shorten it up a bit. It's better now but not perfect.
-I tried their origonal gamechanger comp (becasue I got a deal on one) and hated it. It spit gases everywhere (including into my face on occasion.) The two port Gamechanger Pro comp is a much better design.
Bottom line: I'm not real impressed with most of theTK offerings for the Victory so far. The S&W Victory I got actually had a decent trigger ,controls and grip as it came from the factory. I just got caught up in the "if somebody makes aftermarket parts, it must make the gun better" trap. I am also not impressed with TK as a company ( based on this one experience.) If I had to start again, I likely would have kept the pistol stock ( or at least wait for Volquartsen to come up with better tested designs.)
hth