The safety of using the 6 inch G20 KKM and Lone Wolf barrels in the new G40 came up on another thread. I emailed both KKM and Lone Wolf and here are their responses. Note: I've been using my KKM G20 barrel in my G40 with no problems thus far.
KKM's response: "We think the barrels are compatible, so we heard. Until testing these ourselves we do not recommend using them (just in case)."
Thank you,
Si McIntire
V.P. KKM Precision
5201 Convair Dr.
Carson City, NV 89706
PH: 775-246-5444
Lone Wolf's response: "Well here's the thing, the barrels measure the same, we have had customers use them, but WE have not tested them. The customers who have done it have said they work great."
Alan Thompson
So, there you have it folks. Neither manufacturer has tried their G20 6 inch barrels in a G40. KKM currently recommends against it while Lone Wolf doesn't make a recommendation.
You be the judge. I'm gonna keep using mine until I see something which concerns me or KKM produces a G40 specific barrel and can articulate why it is better than their G20 barrel. What you choose to do with this information is your decision, I'm not advocating any position, just sharing information.
Thanks for posting this.
Natural corporate caution. I can see doing this. And I can see ignoring the recommendation at this point until something negative pops up. America!
Agree.
Thanks, Sep, for making the inquires and posting their replies.
I see in the other thread by jrod (which inspired this one) KKM told him yesterday (August 31st) they were testing the G20 barrel in a G40 and will have the results shortly. Maybe this issue can then be put to rest at least for KKM.
I bought the LWD 6.02" barrel for my G40 MOS and it runs and shoots very well at 50 yards. I have the Burris FF III on it and, works very well so far.
I bought (2) Arrendondo +5 Ext for the G40 mags, both are running good now after I worked on 1 a little to stop the follower from tilting in the mag and causing a jam.
Sean
They should be working on a 8 inch barrell.
Quote from: Wolfie on September 15 2015 01:18:10 PM MDT
They should be working on a 8 inch barrell.
Why? 9" has been available for years.
Did not know that, will get that when my 40 comes in.
Thanks.
FYI, KKM now has a G40 barrel listed on their website. Ordered mine yesterday....now if the pistol would show up I would be in business.
I emailed KKM to see if the G20 and G40 barrels were the same. They are the same according to KKM. Here's their response:
The Glock 20 6" and the Glock 40 are the exact same barrels.
Thank you,
Luke McIntire
CEO KKM Precision
5201 Convair Dr.
Carson City, NV 89706
PH: 775-246-5444
www.kkmprecision.com
Found this thread trying to research using my G20 barrel in my new G40..
My barrel is a Storm Lake.. This is my question and their email reply:
Hello,
I have a 6.02 barrel that I have used in my G20 for hunting. I have recently purchased a G40, and near as I can tell, the factory barrel and your G20 barrel are dimensionally identical. It seems to fit fine and the slide functions properly etc.. I have not shot it yet, but wanted to see if you guys might have any concerns I have not thought of..?
Thanks.
-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Mr. Smith,
You can test it if you want. It won't be dangerous if it goes into battery. I would guess that it won't fit great though. There is a .0010" difference on several critical dimensions of the two barrels, so we do not recommend using that barrel, or any of our barrels, in the Glock 40.
Kevin Stender
Customer Service Manager
TAPCO | StormLake
Remington Outdoor Company Kennesaw
1325 Chastain Road NW, Suite 400, Kennesaw, GA 30144
Quote from: maypo59 on December 13 2015 09:07:33 PM MST
Found this thread trying to research using my G20 barrel in my new G40..
My barrel is a Storm Lake.. This is my question and their email reply:
Hello,
I have a 6.02 barrel that I have used in my G20 for hunting. I have recently purchased a G40, and near as I can tell, the factory barrel and your G20 barrel are dimensionally identical. It seems to fit fine and the slide functions properly etc.. I have not shot it yet, but wanted to see if you guys might have any concerns I have not thought of..?
Thanks.
-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Mr. Smith,
You can test it if you want. It won't be dangerous if it goes into battery. I would guess that it won't fit great though. There is a .0010" difference on several critical dimensions of the two barrels, so we do not recommend using that barrel, or any of our barrels, in the Glock 40.
Kevin Stender
Customer Service Manager
TAPCO | StormLake
Remington Outdoor Company Kennesaw
1325 Chastain Road NW, Suite 400, Kennesaw, GA 30144
Their response makes no sense. Glock's QC tolerance is more than that, in all their pistols. I've measured that much, and more, from the same model pistols, lot to lot. In my experience, SL's tolerance margin is at least that, and more, in the "critical dimensions". KKM, LWD and Bar-Sto all tout their G20 barrels compatible with G40 pistols. In my testing, with the G40 and G20L conversions (as well as a bunch of other calibers), they are fine. Any "critical" variations will be unnoticeable by any shooter, and they are no less safe than any other compatible component.
I don't know what the factory Glock tolerances are... but my guess it's a "CYA" thing for some reason.
I was/am pretty sure if the other manufacturers say it's OK.. why wouldn't theirs? I am also pretty sure they know the other manufacturers answer...
QuoteThere is a .0010" difference on several critical dimensions
That doesn't make a whole lot of sense. Sure in certain round and particularly rotating parts, or even fit parts, .001" can mean a LOT. But Glock barrel fit?? What dimension? Can't involve the bore or chamber. So other?
Oh and unrelated, I did not know those companies are related and owned by Remington.
Quote from: maypo59 on December 14 2015 06:13:33 PM MST
I don't know what the factory Glock tolerances are... but my guess it's a "CYA" thing for some reason.
I was/am pretty sure if the other manufacturers say it's OK.. why wouldn't theirs? I am also pretty sure they know the other manufacturers answer...
No doubt, it's a CYA. KKM said the same thing a while ago. Then, someone at KKM actually tried one, and gave it the okie-dokie. You may be surprised what they
don't know. I'm not a fan of SL barrels, in any case, so it's all chatter to me.
Quote from: DM1906 on December 14 2015 08:38:52 PM MST
Quote from: maypo59 on December 14 2015 06:13:33 PM MST
I don't know what the factory Glock tolerances are... but my guess it's a "CYA" thing for some reason.
I was/am pretty sure if the other manufacturers say it's OK.. why wouldn't theirs? I am also pretty sure they know the other manufacturers answer...
No doubt, it's a CYA. KKM said the same thing a while ago. Then, someone at KKM actually tried one, and gave it the okie-dokie. You may be surprised what they don't know. I'm not a fan of SL barrels, in any case, so it's all chatter to me.
I am no fanboy of SL either, it's what I could find, years ago, when I needed it. That said, in my 20, it's been flawless. I cut the living crap out of my trigger finger a couple weeks ago, it's just about to the point where I can grip well and feel with it, so hopefully in the next couple days, I can go find out if it's going to blow up or not.. LOL.
Have shot several hundred reloads and factory through my SL G20 6" with no problems what so ever. Have also put a couple hundred through a LW G20 10 to 40 conversion barrel with no problems.
(http://i171.photobucket.com/albums/u293/bvanfleet/002_zpsdsx5ki6r.jpg) (http://s171.photobucket.com/user/bvanfleet/media/002_zpsdsx5ki6r.jpg.html)
I ordered a 6" barrel from KKM for my Model 40. It was sold as a M40 barrel. It is supposed to be here Monday.
Tom
I actually have better luck with KKM. You will like it.