Ok...I really tried to wait for other replies first...
The K series 40 one of the best Kahrs made if not the best.
You shouldnt find any of the asthetic problems brought up with previous posts on Kahrs...K?
Its the perfect size to carry and shoot. The grip is one of the few that my PAWS like (read...large hands) and my massive 8 year old, all 60#s of him, can grip and shoot very well.
Its a great gun for ergonomics.
Every K40 Ive shot..we have 3 in our immediate family has functioned flawlessly..combined total of around 12K rounds last count. They are a tad recoil intensive but what smaller 40 isnt? The full grip and weight help make followup shots fairly quick. I double tap with mine as fast and accurately as my buddy does with his 229 just for reference.
The springs in the gun are very strong as they have to be. Expect the recoil springs to go south every 600-800 rnds and I replace mine with Wolff 23# recoils...they seem to last longer than the OEM which are Wolff's anyway. (This isnt just a Kahr thing, Dave at Wolff says any short slide/big caliber gun, IE short Kimbers, etc all do the same thing)
The mag springs have to be seen/played with to be believed...very strong. Use caution the first time you clean the mags...I almost put an eye out
Accuracy is very very good and I think the stock sights are good, probably better for quick sight acquisition than bullseye targe practice but are great none the less.
They are accurate enough to put ALOT bigger guns to shame at the range...once you get used to the trigger.
Ok..the trigger..not exactly the Elite some favor, but Kahr triggers are all good anyway. After you put around 200-500 rnds or dryfire it alot it will get ssssooooo smooth. I also have a 5# striker spring in mine from Wolff..this spring was designed for the Wilson K40 Custom that was made a couple of years ago. Still 100% in function and made a nice difference in the pull weight. Mine has had a bit of smith work to the trigger anyway.
The guns Ive shot are dead on POI/POA with everything from Corbon 135's to the Black Talons 180's I have also. The 3 1/2" barrel is long enough that I get around 1270-1280 FPS from the Corbon 135's and usually over 1150 FPS with Fed. Classic 155's and Gold Dot 155's also. Well over 475 FPE from the little bruiser with the Corbon's and over 440 FPE from the 155's.
For comparison..the 3 - 3-1/2" barreled 45's weve chronoed get a max of 400 FPE from the hottest +P ammo. We havent tested everything out there...admittedly.
The insides of the gun are as good as they get...my smith swears its the best finished/machined gun hes ever seen in over 20 years. The feedramp just got a slightly better shine than came from the factory. He "barely touched it" in his words.
Basically youve just gotten a wonderful little gun...but dont let me twist your reality...just shoot it. I prefer the lighter bullets in mine..as with any gun the 180's really dont give a real ballistic advantage and add to recoil/followup shots slightly, in the smaller configuration.
On my "recommend to do" to the Kahr list:
Wolff springs for recoil, striker and mag...no rush, when the OEMs become tired. Especially the Recoil and Striker.....
Novak/Mep/Trij nights...the 3 dots are what Im used to plus they glow nicely. You can find nights cheap online...have a smith put them in if you havent done it before...I havent heard of a Kahr that makes for an easy sight switch.....
There I feel better....thanks and enjoy your gun.
Shoot well