10mm KKM Gen 5

1418 Views 44 Replies 21 Participants Last post by MinervaDoe, 5 d ago

Hyper J

Discussion Starter · 11 d ago

Thoughts on the new KKM barrel for the Gen 5 10mm’s? Is it necessary? Will it run smoother? Will the tighter chamber cause malfunctions? Is stainless steel a game changer?

GEN 5 Glock 20 Match 10MM 4.6″OAL | KKM

These are for the Gen 5 Glock 20 only Non-threaded barrel length 4.6" with a maximum length option of 7.2". If you would like a custom barrel length between these, just enter it into the optional note section on the checkout screen. We read every note and there is not an extra charge for

kkmprecision.com

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Brickster

· #21 · 10 d ago (Edited)

during the covid ammo supply disruption i got a .40 s&w kkm for my g20. 1,000 range rounds later the barrel had paid for itself. did the same with my g40. when i first had the g29 and was throwing parts at the [email protected] light strike problem i put in a kkm. didn’t solve the problem; solution was a skeletonized titanium striker, but i left the barrel in. if i ever get good enough that i can tell the difference in group size as a function of oem or kkm, that’ll be a very red letter day.

tom mac

· #22 · 10 d ago

Was told , when you can "out-shoot" the stock barrel , it's time to get a better one.

I'll never be that good tho so the stock barrel works fine for me

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Hyper J

Discussion Starter · #23 · 10 d ago

2

tom mac said:
Was told , when you can "out-shoot" the stock barrel , it's time to get a better one.

I'll never be that good tho so the stock barrel works fine for me

I was worried about lead but some coatings now promise safe for Glock?

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jazzsax8

· #24 · 10 d ago

Hyper J said:
Doesn’t that look strange? Big barrel sticking out?

Well it does look unusual but it does function like a Glock 40 with just a barrel swap. So barrel $175, milled slide $100 for $275 total. Try and buy a Glock 40 for that and now you get to use the same grip (mine is modded) and trigger pull for both uses. Not pictured but I got the LoneWolf 6" slide w/open sights in case I need it to "look better". Also scored the LW 6" 9mm conversion barrel to make it a pretty complete package. What's left to upgrade?

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Brickster

· #25 · 10 d ago

Tim Sundles of Buffalo Bore fame has had this on his website for quite a while now . . .

“HARD CAST BULLETS IN POLYGONAL BARRELS

“THE SOURCE OF THE MYTH
True hard cast bullets that are properly lubed (as opposed to lead swaged bullets) will not lead foul polygonal barrels any more than any other type of rifled barrel. Ever since Glock Corporation warned to not use lead bullets in their pistols with polygonal barrels, a myth that hard cast bullets will lead foul polygonal barrels has become widespread in some parts of the firearms world. However, the myth is untrue. Hard cast bullets are not "lead" bullets. (See my article on "Dangerous Pure Lead Cowboy Bullets") Folks (especially folks involved in the shooting industry) have a strong tendency to generalize most everything……if you do this, you’ll end up with generalized results as opposed to exacting results. Because hard cast bullets are grey in color, does NOT make them “lead” bullets.
Pure lead or nearly pure lead bullets have a tendency to foul any barrel, not just polygonal barrels. Years ago, when several Glock pistols experienced cracked barrels because of lead fouling build-up from shooting pure lead bullets, Glock issued a warning not to shoot lead bullets in their polygonal barrels. From that warning, the myth that you should not shoot hard cast bullets in polygonal barrels was born. This myth was born because folks see that grey colored hard cast bullet and ASSUME it has anything to do with pure “lead”, which it does not, at least when it comes to characteristics and dynamics that make bullets perform!

“HARD CAST BULLETS DO NOT FOUL
Provided you use real hard cast bullets, that are properly sized and utilize good lube, you can shoot them all you like in polygonal barrels without causing lead fouling deposits at the front of your chamber or anywhere else in the barrel. I have fired literally thousands of properly alloyed, lubed and sized hard cast bullets from my various Glock pistols and have never experienced any metallic fouling build-up of any consequence. If I did that same amount of shooting with cheap pure lead swaged bullets of unknown origin, I could have severely lead fouled my barrels, to the point of creating a bore obstruction and possible cracking or bursting a barrel. However, in my experience, quality hard cast bullets won't foul a Glock polygonal barrel or any other type of barrel but lead bullets normally will.”

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SDGlock23

· #26 · 10 d ago

I wouldn't expect much if any accuracy gain with a KKM but they are better for hot loadings because the brass isn't swelled as bad and they will have better chamber support. Funny how it took 10mm to get KKM to release Gen5 barrels, maybe now they'll offer them in .40 and .45 as well....sheesh.

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RGP

· #27 · 10 d ago

Brickster said:
Tim Sundles of Buffalo Bore fame has had this on his website for quite a while now . . .

HARD CAST BULLETS IN POLYGONAL BARRELS

THE SOURCE OF THE MYTH
True hard cast bullets that are properly lubed (as opposed to lead swaged bullets) will not lead foul polygonal barrels any more than any other type of rifled barrel. Ever since Glock Corporation warned to not use lead bullets in their pistols with polygonal barrels, a myth that hard cast bullets will lead foul polygonal barrels has become widespread in some parts of the firearms world. However, the myth is untrue. Hard cast bullets are not "lead" bullets. (See my article on "Dangerous Pure Lead Cowboy Bullets") Folks (especially folks involved in the shooting industry) have a strong tendency to generalize most everything……if you do this, you’ll end up with generalized results as opposed to exacting results. Because hard cast bullets are grey in color, does NOT make them “lead” bullets.
Pure lead or nearly pure lead bullets have a tendency to foul any barrel, not just polygonal barrels. Years ago, when several Glock pistols experienced cracked barrels because of lead fouling build-up from shooting pure lead bullets, Glock issued a warning not to shoot lead bullets in their polygonal barrels. From that warning, the myth that you should not shoot hard cast bullets in polygonal barrels was born. This myth was born because folks see that grey colored hard cast bullet and ASSUME it has anything to do with pure “lead”, which it does not, at least when it comes to characteristics and dynamics that make bullets perform!

HARD CAST BULLETS DO NOT FOUL
Provided you use real hard cast bullets, that are properly sized and utilize good lube, you can shoot them all you like in polygonal barrels without causing lead fouling deposits at the front of your chamber or anywhere else in the barrel. I have fired literally thousands of properly alloyed, lubed and sized hard cast bullets from my various Glock pistols and have never experienced any metallic fouling build-up of any consequence. If I did that same amount of shooting with cheap pure lead swaged bullets of unknown origin, I could have severely lead fouled my barrels, to the point of creating a bore obstruction and possible cracking or bursting a barrel. However, in my experience, quality hard cast bullets won't foul a Glock polygonal barrel or any other type of barrel but lead bullets normally will.

Sundles is right, but the mythology sells a lot of barrels that usually aren't any better than OEM.

The con artists promoting the mythology will sell you anything, and they love easily disassembled items like a Glock because they can sell you "new and improved drop in" parts until the only OEM item you have left is the frame and then they'll sell you an "improved" frame and tell you it will solve all the problems you're having.

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Matteo1371

· #28 · 10 d ago

SDGlock23 said:
I wouldn't expect much if any accuracy gain with a KKM but they are better for hot loadings because the brass isn't swelled as bad and they will have better chamber support. Funny how it took 10mm to get KKM to release Gen5 barrels, maybe now they'll offer them in .40 and .45 as well....sheesh.

They have already had Gen 5 barrels for the 40

Glock gen 5 | KKM

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Hyper J

Discussion Starter · #29 · 10 d ago

Matteo1371 said:
They have already had Gen 5 barrels for the 40

Glock gen 5 | KKM

You ruined it I believed it was the 10mm magic that was the driving force.

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Matteo1371

· #30 · 10 d ago

Hyper J said:
You ruined it I believed it was the 10mm magic that was the driving force.

Oh I’m sure you’d love to have that delusion. But KKM has been producing Gen 5 barrels for a bit now. Well before the Gen 5 G20/21 release.

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Brickster

· #31 · 10 d ago

You ruined it I believed it was the 10mm magic that was the driving force. said:
Gaston wanted a contract with the bureau to supply the new generation of limp wristed agents who can’t handle the mighty 10 mil

DirectDrive

· #32 · 10 d ago

Hyper J said:
View attachment 1194098

Thoughts on the new KKM barrel for the Gen 5 10mm’s? Is it necessary? Will it run smoother? Will the tighter chamber cause malfunctions? Is stainless steel a game changer?

GEN 5 Glock 20 Match 10MM 4.6″OAL | KKM

These are for the Gen 5 Glock 20 only Non-threaded barrel length 4.6" with a maximum length option of 7.2". If you would like a custom barrel length between these, just enter it into the optional note section on the checkout screen. We read every note and there is not an extra charge for

kkmprecision.com

They are nice barrels, I have a couple in 9mm.
My stock G20.4 is super-accurate so I wouldn't do a KKM for your G20.5
Maybe if I needed a threaded barrel, I'd entertain a KKM for a G20.5

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TheDirtyGoT

· #33 · 9 d ago

I originally bought my 6 in KKM for the Glock 20 but it wouldn’t run reliably for me, so when I got my Glock 40 I threw it in and it hasn’t came back out! Flawless operation and shoots tight groups! And the biggest thing is I think it looks cool!

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SDGlock23

· #34 · 9 d ago

Matteo1371 said:
They have already had Gen 5 barrels for the 40

Glock gen 5 | KKM

Nice! Thanks for the link, I looked at their offerings yesterday under the pull down menu and didn't see a one of them. I'll have to order a few up before long.

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Matteo1371

· #35 · 9 d ago

SDGlock23 said:
Nice! Thanks for the link, I looked at their offerings yesterday under the pull down menu and didn't see a one of them. I'll have to order a few up before long.

No problem. Happy to have helped.

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FictionalGlock7

· #36 · 9 d ago

Brickster said:
You ruined it I believed it was the 10mm magic that was the driving force. said:
Gaston wanted a contract with the bureau to supply the new generation of limp wristed agents who can’t handle the mighty 10 mil
[/QUOTE

I'm waiting on HyperJ to post that video of Autumn's armory shooting a G20 and make a comment about a girl being able to handle the power of the mighty 10mm that will cause small nuclear explosions in the intended target that the sissies at the FBI's dainty hands can't handle

Don't let me down HyperJ! 😝

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Cranky old cop

· #37 · 8 d ago

MinervaDoe said:
I put a BarSto drop in barrel in my Glock 20 SF and was really impressed by its accuracy. Then one day just for fun, I plopped my stock Glock barrel back in and compared them at fifteen yards. The stock barrel put up tighter groups. Good enough for me. Now I have an aftermarket barrel if I want to shoot lead bullets through the gun. But the stock barrel stays in the gun.
And now, from the Don't Believe Everything That You Hear on the Internet file: Here's Tom Hanks shooting a tank with a 10mm.

Yeah like 10 mm existed in 1944…….😂

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MinervaDoe

· #38 · 8 d ago

Cranky old cop said:
Yeah like 10 mm existed in 1944…….😂

You've obviously seen through my clever ruse. But, if you're still interested, I can still get you a great deal on that bridge in Brooklyn that we discussed.

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Matteo1371

· #39 · 8 d ago

Ha-ha, you fool! You fell victim to one of the classic blunders, the most famous of which is “Never get involved in a land war in Asia,” but only slightly less well known is this, "Never debate anything about calibers when in online forums like Glock Talk."

Oddly enough I have a sudden urge to watch the Princess Bride again...

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MinervaDoe

· #40 · 8 d ago

Matteo1371 said:
Oddly enough I have a sudden urge to watch the Princess Bride again...

My wife went to a conference wearing a name tag that said, "My Name is Inigo Montoya."
Nobody got it.
That's why I married her.

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