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1/2/2026 9:19:51 PM EDT
[Last Edit: lightguy][Edited]
Probably many topics here I haven't investigated.
My story: Bought a used  matching SN set  of HK MK23 pistol and can and the can blew off the first time I fired it.
WTF ? Stripped threads on the can . Remember they threaded the barrel; MATCHED SET.
Contacted KAC.
They wanted over $100plus shipping  just to LOOK at the problem. Not to fix their F up but to LOOK at their F up.
Parts and labor sure to come.
This is supposed to be the top notch-end all-money no object manufacturer.
Buyer beware.
1/2/2026 9:26:02 PM EDT
[#1]
So you’re saying you spent some money to get a Mk23 (that is factory threaded, btw) with a matching KAC Mk23 Suppressor and the can blew off.

But you’re unhappy that you have to pay the shipping back to the home base for them to look at your used, second hand (or maybe more) equipment?

Tell me you’re new to this by less words.

Send it back to them, eat the shipping and let them have a look at it.
nothing is absolute
1/2/2026 9:28:55 PM EDT
[Last Edit: thedownzero][Edited] [#2]
Sorry you’re going through it. I’ve owned/sold a lot of KAC products and have never really been impressed or ecstatic about their offerings.

Originally Posted By themissinglink:
So you’re saying you spent some money to get a Mk23 (that is factory threaded, btw) with a matching KAC Mk23 Suppressor and the can blew off.

But you’re unhappy that you have to pay the shipping back to the home base for them to look at your used, second hand (or maybe more) equipment?

Tell me you’re new to this by less words.

Send it back to them, eat the shipping and let them have a look at it.
View Quote

Tell me you’re new to reading comprehension with less words…
$100 + shipping
1/2/2026 9:38:03 PM EDT
[#3]
You never know.

They might get it back and cover everything.

You'll never know until you try.
1/2/2026 9:46:58 PM EDT
[#4]
I'm not following how the can "blew off". The barrel is threaded by HK in M16x1 RH. I believe KAC also makes piston for the USPT in M16x1 RH, but doubt you would be able to even get it on a Mk23 barrel.

Or do you mean the can shot off, leaving the piston still threaded on the barrel? That would make more sense, and would indicate that the piston end cap wasn't fully screwed on.
1/2/2026 9:48:19 PM EDT
[#5]
You bought it used.


If you are really mad just bandsaw it and post pics.
"I miss the days of being able to shoot all commies" G.B.
1/2/2026 11:06:35 PM EDT
[#6]
Originally Posted By lightguy:
Probably many topics here I haven't investigated.
My story: Bought a used  matching SN set  of HK MK23 pistol and can and the can blew off the first time I fired it.
WTF ? Stripped threads on the can . Remember they threaded the barrel; MATCHED SET.
Contacted KAC.
They wanted over $100plus shipping  just to LOOK at the problem. Not to fix their F up but to LOOK at their F up.
Parts and labor sure to come.
This is supposed to be the top notch-end all-money no object manufacturer.
Buyer beware.
View Quote
So you bought the matching pistol and can used. The previous owner shot it without problems but when you shot it the can flew off? Sounds like a user problem to me.

And how do you know the can has stripped threads? Did it felt funny when you threaded the can onto the barrel? If it did felt funny (stripped threads) why did you shot it anyway?
2nd Battalion 9th Marines Echo Company

3rd Battalion 8th Marines India Company
1/2/2026 11:15:08 PM EDT
[#7]
Quote History
Originally Posted By akethan:
You bought it used.


If you are really mad just bandsaw it and post pics.
View Quote

In God we trust, all others pay cash
1/2/2026 11:29:31 PM EDT
[#8]
Hey, look at the bright side.

At least you were able to buy something KAC makes to actually be in a position to send something back.
1/2/2026 11:42:18 PM EDT
[#9]
They took care of their stripped KAC receiver that I returned. But you have to start somewhere.
1/3/2026 1:21:10 AM EDT
[#10]
Quote History
Originally Posted By REAPER2502:
You never know.

They might get it back and cover everything.

You'll never know until you try.
View Quote


Or just have a paperweight.
1/3/2026 9:56:49 AM EDT
[#11]
Well, I guess KAC lost a customer.

Oh well.¯\_(ツ)_/¯
I wanted a mission, and for my sins, they gave me one.
No rules today, sport…just orders.
It’s not about how many people you kill, it’s about how many you save.
1/3/2026 1:03:17 PM EDT
[Last Edit: EnablerNo1][Edited] [#12]
How were you not able to identify stripped threads at the time of suppressor installation? That would be rather obvious and would make one stop any attempted install and not shoot the gun.

KAC would not have threaded the mk23 barrel. Those are factory threaded.

As others have said, it’s a used firearm and suppressor. Your story of stripped threads doesn’t really sound plausible. How is KAC to know if it’s a manufacturing defect or user error? Truly this sounds like user error. $100 plus shipping is an annoyance, but what are your other options? Are you going to cut off your nose to spite your face? Don’t be foolish or stubborn. Just send it in and let KAC look it over.

1/3/2026 4:10:35 PM EDT
[#13]
While shitty, it sounds like business as usual at KAC.

You're not Gov/Mil, so they don't give a rat's ass about you or anything you have. They've never been supportive of the civilian market, the second amendment, or anything related to shooting sports outside of military and police competitions.

It's unfortunate, but because people want "the look", they need to pay the price, and honestly $100 is pretty low for them to even talk with you let alone look at something.
1/3/2026 4:41:57 PM EDT
[#14]
wait, you bought a used gun and suppressor  and the first time you shot it the suppressor flew off the barrel? I don't think it is a manufacturing defect I would go back to the guy that screwed it up
I wish I was half the man my dog thinks I am.

RIP SSG Marc Anthony Scialdo KIA 3-11-2013 Kandahar
1/3/2026 6:32:57 PM EDT
[#15]
Back 6 years ago they rmaed my ambi lower terrible internal anodizing defect and then rmaed THAT lower because it wouldn't drop gen 3 pmags.  

Finally ended up with a lower that was anodized inside and could drop all mags.

When my CRS-PRT wouldn't fit on my CQB upper without shimming they sent me a new QDC collar free.  


I bought all this stuff brand new....but my warranty experience with them has never cost me anything and turn around has been quick.
1/3/2026 9:55:32 PM EDT
[#16]
Quote History
Originally Posted By An_Orphanage:
While shitty, it sounds like business as usual at KAC.

You're not Gov/Mil, so they don't give a rat's ass about you or anything you have. They've never been supportive of the civilian market, the second amendment, or anything related to shooting sports outside of military and police competitions.

It's unfortunate, but because people want "the look", they need to pay the price, and honestly $100 is pretty low for them to even talk with you let alone look at something.
View Quote


For comparison, I have a URXII rail I bought second hand that had the heat shield removed, I was quoted like $200 to look at it and possibly fix it by the service desk.

To further opine on the OP;

On a certain level, because zero pics are provided, I don't believe what is being presented.

My guess is that OP got taken in some way by an unscrupulous seller on the second hand market and is now blaming KAC because he was already fucked over and doesn't even know it.

Advice to the OP, post some pics up and go from there. If the parts are what you say they are(even partially) there is still a lot of value there that can be recovered.
1/3/2026 10:21:25 PM EDT
[Last Edit: agnisco][Edited] [#17]
OP will show KAC by never buying anything made by them again after complaining about a product he purchased on the second hand market that has problems that he cannot at the time attribute to anything done or caused by KAC.  I guess like all successful businesses, KAC should offer free services, warranty work, parts, and an apology for problems with one of their products that is currently owned by someone that they didn’t even sell said product directly to.

I’m sure that KAC is super going to miss him.
1/3/2026 10:59:25 PM EDT
[#18]
I have a strange feeling we will not be hearing from the OP again.
1/4/2026 2:02:33 PM EDT
[Last Edit: waddlingweezol][Edited] [#19]
Quote History
Originally Posted By An_Orphanage:
While shitty, it sounds like business as usual at KAC.

You're not Gov/Mil, so they don't give a rat's ass about you or anything you have. They've never been supportive of the civilian market, the second amendment, or anything related to shooting sports outside of military and police competitions.

It's unfortunate, but because people want "the look", they need to pay the price, and honestly $100 is pretty low for them to even talk with you let alone look at something.
View Quote


I had a 14.5" Mod 2 Upper, (with a Keymod URX4 so it was one of the earlier ones) and it started having a weird failure to feed. I ruled out that it was the upper and KAC sent me an RMA for it. I did have to pay to ship it to them, but once they got it they said that they couldn't figure out what was wrong with it. They also said they were going to just send me a replacement upper. I asked if they could swap out the Keymod handguard for an MLOK version and got no reply.

A few days later a brand new Mod 2 MLOK upper showed up at my door. It was shitty I got a lemon the first time, but I can't say that their CS sucked.

ETA: this was before they discontinued their Keymod uppers.
1/4/2026 3:36:26 PM EDT
[#20]
It’s “fewer.”
1/4/2026 3:42:32 PM EDT
[#21]
I bought a used Ford, when I went to change the oil the drain plug was stripped and leaking. The Ford dealership wants to charge me a nominal fee to fix it.

I’ll never buy another Ford ever.
1/6/2026 10:46:20 PM EDT
[#22]
You are the absolute worst type of customer, ever.
1/8/2026 1:39:54 PM EDT
[#23]
@lightguy you’ve been a member here for 15 years come back and update your thread and reply to folks questions.

1/9/2026 10:16:47 PM EDT
[#24]
I’d really like to see the stripped threading. OP can you post pics of everything?
“The beauty about the second amendment is it won’t be needed until they try to take it.” -Thomas Jefferson
1/9/2026 11:54:49 PM EDT
[#25]
Originally Posted By themissinglink:
So you’re saying you spent some money to get a Mk23 (that is factory threaded, btw) with a matching KAC Mk23 Suppressor and the can blew off.

But you’re unhappy that you have to pay the shipping back to the home base for them to look at your used, second hand (or maybe more) equipment?

Tell me you’re new to this by less words.

Send it back to them, eat the shipping and let them have a look at it.
View Quote


Baffles (get it?) me that people make posts like this without even understanding what you actually are complaining about.

Originally Posted By REAPER2502:
You never know.

They might get it back and cover everything.

You'll never know until you try.
View Quote


This is what I would do.  Pay the shipping, pay the $100 and see where it goes.   You already bought the pistol and matching suppressor, just a little more and it might works out.
Words fall from your mouth like shit from ass.
1/13/2026 8:58:13 AM EDT
[#26]
Quote History
Originally Posted By An_Orphanage:
While shitty, it sounds like business as usual at KAC.

You're not Gov/Mil, so they don't give a rat's ass about you or anything you have. They've never been supportive of the civilian market, the second amendment, or anything related to shooting sports outside of military and police competitions.

It's unfortunate, but because people want "the look", they need to pay the price, and honestly $100 is pretty low for them to even talk with you let alone look at something.
View Quote



Posts like this are so fucking dumb lol

1/15/2026 11:00:01 AM EDT
[#27]
Quote History
Originally Posted By HecklerKac:



Posts like this are so fucking dumb lol

View Quote


incredible isn't it... People are so entitled.
1/15/2026 11:02:58 AM EDT
[Last Edit: ErikTaylor][Edited] [#28]
Let's start a Go Fund me to get this can in and let KAC look at it since pics aren't being posted. They maybe we can get Trey to post the findings here.

ETA: I'm really curious about this alleged failure!
“The beauty about the second amendment is it won’t be needed until they try to take it.” -Thomas Jefferson
1/15/2026 1:03:09 PM EDT
[Last Edit: agnisco][Edited] [#29]
Quote History
Originally Posted By ErikTaylor:
Let's start a Go Fund me to get this can in and let KAC look at it since pics aren't being posted. They maybe we can get Trey to post the findings here.

ETA: I'm really curious about this alleged failure!
View Quote


We all are.  Unfortunately the OP ran for the caves in Tora Bora after being cock-kicked, or maybe cunt-kicked (can’t presume anything nowadays), all up and down this thread.  We will probably never know.
1/15/2026 10:45:41 PM EDT
[#30]
Quote History
Originally Posted By agnisco:


We all are.  Unfortunately the OP ran for the caves in Tora Bora after being cock-kicked, or maybe cunt-kicked (can’t presume anything nowadays), all up and down this thread.  We will probably never know.
View Quote


Agree
1/16/2026 3:44:48 PM EDT
[#31]
Attached File


Did you check to make sure it has the official KAC mk23 logo on it?
1/16/2026 4:17:57 PM EDT
[#32]
Rich people problems
1/17/2026 1:23:43 PM EDT
[#33]
Quote History
Originally Posted By flg23:
https://www.ar15.com/media/mediaFiles/169610/IMG_8707_jpeg-3695717.JPG

Did you check to make sure it has the official KAC mk23 logo on it?
View Quote



Well done. You win the internet today.
5/18/2026 10:01:56 AM EDT
[Last Edit: RABIDFOX50][Edited] [#34]
Quote History
Originally Posted By akethan:
You bought it used.


If you are really mad just bandsaw it and post pics.
View Quote


Now that brings back memories, LOLZ!

I just had to revive this thread just for that….
8/14/2026 12:12:25 PM EDT
[#35]
Funny how OP never came back to this

Almost makes me think it was a bunch of bullshit

It was certainly user error
8/22/2026 12:49:38 PM EDT
[#36]
Quote History
Originally Posted By ErikTaylor:
Let's start a Go Fund me to get this can in and let KAC look at it since pics aren't being posted. They maybe we can get Trey to post the findings here.

ETA: I'm really curious about this alleged failure!
View Quote


Is OP Jonathan Arthur Ciencer?
Not sure if anyone remembers that joke.

I'm in for the pictures of the failure.
8/22/2026 1:11:32 PM EDT
[#37]
Quote History
Originally Posted By EnablerNo1:



Well done. You win the internet today.
View Quote View All Quotes
View All Quotes
Quote History
Originally Posted By EnablerNo1:
Originally Posted By flg23:
https://www.ar15.com/media/mediaFiles/169610/IMG_8707_jpeg-3695717.JPG

Did you check to make sure it has the official KAC mk23 logo on it?



Well done. You win the internet today.


Does Grif make a mk23 looking can? Sheit.
"That pistol just kept saying, let go of my ears, you don't know what you're doing." - thehellbringer
8/22/2026 1:40:45 PM EDT
[#38]
Quote History
Originally Posted By cccpNyC:


Does Grif make a mk23 looking can? Sheit.
View Quote


I don’t think so, but they just copied the 416/Geissele/KAC/Colt handguard tongue-in-groove anti-rotation tab on their handguard-receiver interface. So, the innovation continues…

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