Question on Kahr barrel rifling

This is a discussion on Question on Kahr barrel rifling within the Defensive Carry Guns forums, part of the Defensive Carry Discussions category; Hello to all. New to the forum, but not to guns or gun forums, just this one. Anyhow, I'm looking at picking up a used ...

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Thread: Question on Kahr barrel rifling

  1. #1
    New Member Array methos1979's Avatar
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    Question on Kahr barrel rifling

    Hello to all. New to the forum, but not to guns or gun forums, just this one. Anyhow, I'm looking at picking up a used Kahr MK9 in a trade with a friend. The gun looks good and shoots very well. The one issue I have is the barrel's rifling. I'm used to seeing relatively distinct and somewhat sharp lines between the lands and grooves on barrel rifling. On this Kahr though the rifling seems very 'blended' for want of a better word, like it's very worn. Is this just the way Kahr rifles their barrels or is this barrel very worn? Any feedback from those who own Kahr's, especially the MK9 owners, is very much appreciated.

    Thanks!

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    Member Array pfcslr's Avatar
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    Polygonal rifleing

    Is what it is called, if I am rembering right it reduces drag and fouling.
    Others might have more insight.




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    Distinguished Member Array Siafu's Avatar
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    5.4.3.2.1....

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    New Member Array methos1979's Avatar
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    Excellent. I've heard of the polygonal rifling but never paid much attention or actually saw what it looks like. I know I've heard rumblings about it in certain other guns but I'm not worried about it. I take it the 5, 4, 3, 2, 1, comment was a jump off to a discussion on the pros/cons of this type of rifling! No need, I just wanted to make sure the barrel was not worn.

    Thanks for the info!

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    VIP Member Array cvhoss's Avatar
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    That's the type of rifling Kahr uses in most of their pistols. As far as I know, only the CW series uses standard cut rifling. pfcslr is correct that Kahr refers to it as Polygonal rifling as do most companies who use the same type. Glock and H&K also use polygonal barrels. While some have been able to do it without problems, most recommendations are to not use unplated lead bullets in barrels with polygonal rifling. Use only plated or jacketed bullets. I only have one Kahr and have shot a few H&K pistols but have found the polygonal barrels to be very accurate.

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    Member Array Desk Jockey's Avatar
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    Yup; your description sounds like my MK9 from the day I bought it new.

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    Distinguished Member Array Siafu's Avatar
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    Quote Originally Posted by methos1979 View Post
    Excellent. I've heard of the polygonal rifling but never paid much attention or actually saw what it looks like. I know I've heard rumblings about it in certain other guns but I'm not worried about it. I take it the 5, 4, 3, 2, 1, comment was a jump off to a discussion on the pros/cons of this type of rifling! No need, I just wanted to make sure the barrel was not worn.

    Thanks for the info!
    No, it was a reference to how quick the quality responses would come rolling in. I get the best help from this forum, better than any other. There is a good group of people who are regulars here.

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    Senior Member Array Danimal's Avatar
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    I think it is called Lothar Rifling. The CW series doesn't have them, the others do. HK also uses this type of rifling. I found this on Wikipedia.



    Regardless, good choice on the MK9.

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    Distinguished Member Array ripley16's Avatar
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    Here's one of my favorite pics. This shows a HK polygonal barrel that is similar to your Kahr. If you want smooth looking, you should check out a CZ82 barrel.

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