Needing Better Sights

I've enjoyed plinking with .22 pistols for years but I think better sights would shrink my groups. I have a Ruger MK 3 with a Volquartsen trigger kit. Stock sights are fine for plinking but not for getting a precision shot at 25 yards. They're too big. I can't detect much motion with these sights & the front blade is wider than my target. Rear sight gap is 1/8" & front sight is also 1/8" wide. I haven't found better sights online so I looked at other .22 pistols & I'm not finding target-grade sights for budget pistols. Wondering, what are my options? Can't afford Olympic grade pistols, I'm retired. Don't want a red dot. Have one & it helps but I prefer open sights. If anyone has found target-grade sights for a Buckmark, Victory or Ruger MK 3 please let me know. Anyway the Ruger is accurate. With the red dot it puts 10 shots in 1.25" at 25 yards with a rest. Wolf Match Target .22 ammo. My Canik TP9SF 9mm is almost as accurate. Has a FreedomSmith trigger.

A superior sight set.  My favorite by far.
https://kensight.com/fully-adjustable-rear-sight-for-ruger-mkii-and-mkiii-beveled-blade-w-serrations-includes-undercut-patridge-front-sight-0-070-higher-than-factory-front-no-serrations/

That Kensight package looks good, in an old thread it was mentioned that the Kensight rear notch is deeper than the Volquartsen.

https://volquartsen.com/departments/mk_iv_parts/inventory_configurations/160

Thanks very much. I contacted Kensight for the widths & if they're narrower than my stock sights I'll buy them. They appear to be narrower in the pics. That Volquartsen also might be an option. It's a little more narrow than my stock rear sight.

Does anyone know the width of this front sight & rear notch? Kensight won't reply. I asked them on Facebook & through their website.

Well Kensight can't be contacted by email, phone or Facebook so for now I got a .090" front sight from Dawson Precision to replace the .125" I have now. Hoping the rear sight works ok with it. Might be a little wide, we'll see.

UPDATE: I saw an adjustable rear sight with a 0.110" rear notch & I ordered it from Volquartsen.