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View Full Version : Are K9 and K40 frames identical?



rvbgtr
03-01-2011, 07:58 PM
Trying to figure out if a K9 slide will work on a k40 frame. Thanks

jocko
03-02-2011, 02:23 AM
My bet the K40 side is a tad bigger slide. The PM40 and PM9 slides do not interchange as the PM40 is a tad wider slide, so my guess it will be the same thing with the K series..

rvbgtr
03-18-2011, 09:10 PM
Jocko,

Thanks. Since my original post I was able to get a E9 slide assembly. It mounts on the K40 frame with out any apparent problems. The K40 slide is wider. Kahr's web site shows a difference of .94 to .90, but the inside width of the rails appear to be the same. The E9 and K40 slide stops are different.

Wondering if there is anything I'm missing here or if I should test it out at the range.

I've also noticed the K40 and 9mm mags are dimensionally the same. Follower looks a little different, though I'm not sure if that is a 9mm vs. .40 thing or simply Kahr changing design. 9mm and .40 load in both fine. Has anyone ever confirmed the 9mm and .40 mags are the same?

Also, does anyone know whether the plastic front sight of the E9 is identical to that of the current CW9 front sight? Might consider replacing it with one of those Dawson fiber optic sights.

Thanks

rvbgtr
04-03-2011, 04:05 PM
More K series questions.

Are the contoured frames all stainless? Or did Kahr also make carbon steel contoured frames?

When did the ejector design change. Early models have a much larger ejector part than curren designs. Just curious. Thanks,

jocko
04-03-2011, 04:22 PM
man ur running questions by me that I have never seen before. wish I could give u an answer .. I have never ever handled a carbon steel frame kahr so I have no idea what they have changed from then to now..kahr could answer that question on the front site bit. My feelings are that they are the same, but I would suggest getrting that info from the horse mouth..

gb6491
04-03-2011, 06:08 PM
...Also, does anyone know whether the plastic front sight of the E9 is identical to that of the current CW9 front sight? Might consider replacing it with one of those Dawson fiber optic sights.

Thanks
Kahr lists a front sight (part number 034a) under "Parts unique to CW Series/E9": http://www.kahr.com/PDF/kahrpartslist.pdf
Regards,
Greg

rvbgtr
04-03-2011, 06:39 PM
Thanks guys. Kahr confirmed on the sights, so looks like I'm good to go with the Dawson sight. Also confirmed the contoured black frame of my K40 is carbon steel, as the last digit of the model number is "0".

TonySoprano
04-04-2011, 08:08 AM
Early K9s and E9s were carbon steel then they were switched stainless steel I have a 1997 carbon steel E9 and its my main carry piece for the last 13 years and has over 40,000 rounds fired thru it. besides changing springs replaced the grips with the wood ones and had a dove tail cut in slide to put different sights on it "XS Sights"

jocko
04-04-2011, 09:16 AM
gee and they say kahrs don't last.

rvbgtr
04-27-2011, 01:06 PM
Made it to the range. First, 9mm mag worked with .40 cal rounds in the K40, just wouldn't keep slide open after last round.

Second, tried out a E9 upper on the K40 lower. 50 rounds of 9mm, no problem. The .40 cal mags worked fine with 9mm rounds and held the slide open after last round.