The MK9 is somewhat of an odd duck in the current state of pocket pistols in that it is a completely Stainless Steel pocket pistol. No Scandium, Aluminum, or Polymer here. To get a complete understanding of this pistol, let’s look at the specifications:
Model: MK9
Caliber: 9mm
Capacity: 6+1, 7+1 (magazine with grip extension)
Operation: Trigger cocking DAO; lock breech; "Browning - type" recoil lug; passive striker block; no magazine disconnect
Barrel: 3.0", polygonal rifling; 1 - 10 right-hand twist
Length: O/A 5.3"
Height: 4.0"
Slide Width: .90"
Weight: Pistol 22.1 ounces,Magazine 1.9 ounces
Grips: Wraparound, textured hard nylon
Sights: Drift adjustable, white bar-dot combat sights(tritium night sights optional)
Finish: Matte stainless steel (M9093), Polished stainless steel (M9098)
Magazines: 1 each: 6 rd flush baseplate and 7 rd with extended grip
At 22.1 ounces (without loaded magazine) this is a little heavy for a pocket pistol. One would think that the MK9’s svelte sister, the 14 ounce PM 9, would be a better choice but…not necessarily. Like most handgun purchases, deciding on the features you want is a compromise since there aren’t too many “perfect” handguns out there. I found the PM 9 to be too thin to shoot comfortably and if you can't shoot a pistol comfortably it is difficult to shoot it accurately. The stats from Kahr put both pistols with a slide width of .90. This maybe so, but the MK 9’s stainless steel grip is surrounded by the wraparound nylon grips that fill my hand better than the skinny, bare polymer frame of the PM 9. The extra weight of the stainless steel also lessens the recoil, but the 9mm recoil is not really an issue to me in the realm of pocket pistols.
And being a pocket pistol the MK 9 rides well in either an inside-the-waistband rig or a pocket holster. If you want to get an MK 9 for pocket carry you must make sure that the pocket is strong enough to hold it and that your pants are properly supported by your belt. The heavier weight of this pistol can cause the pocket and pants to sag if they are not help up properly. My only other complaint is that the grip is a little too vertical and I would appreciate a just a bit more angle (say, oh…11 degrees). That being said, the pistol is still pretty easy to hold onto during shooting and for me, the Pearce finger extension paid dividends during the handling of the handgun. My hands are small enough that the finger extension allows me get all three fingers on the grip.
The trigger pull is somewhat long but very smooth and not too heavy. Many feel that Kahr pistols have the best double action of any pistol on the market. They might be right, however due to the length of the pull it is important to be on guard against muscling the pistol and pulling or pushing the shots to the left or right.
Unlike many small pocket pistols the MK 9 has actual and useable 3 dot sights and I applaud Kahr for realizing that many people still want to be able to get a proper sight picture on target (However, I do wish there were night sights on the pistol).
As you will see in the targets included below the accuracy of the MK 9 is more than sufficient at reasonable distances.

This one came about a year later. At this time I had a full sized CZ 75 B, a 75 Compact D PCR, and a P-01, all of which were in 9mm. I loved the CZ design so I figured a .40 was a perfect compliment. The accuracy was exactly what I expected but unfortunately it also had reliability problems. Again I tried different mags and a variety of different ammunition but all to no avail. The gun continually jammed. Sometimes they were failures to feed but mostly they were the dreaded double feeds which just locked up the pistol. I had to force the slide in to the locked position and rip the magazine out with great force. Unfortunately this experience, along with the above mentioned Springfield left me with a sour attitude toward the .40 S&W cartridge and to this day there is not another one in my battery. (Although there is a Talo Glock 23 in .40 S&W in the display case that might tempt me into giving the .40 another chance