I want to purchase a barrel for my Glock 40. I am leaning towards a threaded barrel with compensator. My wallet likes the Lone wolf, but maybe the KKM products are worth it.
Lets hear from actual people that have these. Pro and Con please.
(based on negative stuff on Storm Lake, I am not considering that)

Glock 29 and 20 experiences count plain barrels too not just threaded ones.

I've got the KKM 6 inch barrel originally purchased for my G20 and now being used in my G40. I have no complaints with it. Fit and finish are excellent, shoots well and cleans very easily.

It's eagerly gobbled all the factory and handloaded 180s I've fed it but is sensitive to the seating depth of 200 grain WFNGCs from both Beartooth and Double Tap. Most reloading manuals specify a COAL of 1.260 but the 200 grain lead bullets need to be seated a little deeper in order to chamber reliably in my G40. Once I figured out the right seating depth for those bullets, off she went without any problems.

If I was in the process of cleaning my G40, took a break and a meteorite crash landed on my KKM barrel...I'd buy another one.   

LWD now using company that is in Duluth Georgia.  I've had good luck with the 9mm, 357Sig and 9x25Dillon conversions from LWD.

QuoteDasan Machineries Co. LTD
Dasan is headquartered in South Korea and has recently opened a manufacturing facility in Duluth Georgia. Dasan has been manufacturing barrels for some of largest brands in the world for more than 20 years and is well known for producing a high quality yet still value priced product.

LWD is fine, but the chamber will be TIGHT.

Have LW in the Glock 29 in 10mm extended, 10mm long, 357 Sig and .40 caliber. The 40 had some problems and I sent it back with my slide and they got it working right and the service was quick.

Glock 33 with 40 and 9mm and they work perfect.

Lone Wolf is good to go and I think they are still on sale.

Have both LW and KKM for my G20 long slide conversion.   If I had to pick between the two, I would choose KKM.  Both seem to function  without flaw. Accuracy about the same depending on loads. The KKM has a slight edge on finish.  As a matter of fact I went ahead and purchased a 40 cal KKM barrel just for fun and am pleased as well.

I feel the KKM love. Having a little hard of a time justifying 220 for KKM versus 110 for the LWD.
That's the 6+ inch threaded barrel.

Quote from: sstewart on September 25 2015 09:55:52 AM MDT
I feel the KKM love. Having a little hard of a time justifying 220 for KKM versus 110 for the LWD.
That's the 6+ inch threaded barrel.

I obviously haven't seen the need for more expensive than LW barrels. It's a Glock. As I posted, I only had a problem with multiple tight chambers with around 8-10 LW barrels I have purchased the last 4-5 years. Just this year, I found the home remedy. When I griped to LW back in 2012-13 or so: "Just shoot the hottest ammo you can find, that should loosen it up" 

I found valve lapping compound, a bronze brush and cordless drill followed by polishing to be the perfect cure.

My vote is for the KKM....just shot my 6" in my G4 G20 today, about 150 rounds....just making sure for the upcoming deer season. 

3 votes each. Still on the fence.

Started with LWD and after having to seat everything short for their chamber I went with KKM.

own one LWD and two KKM. KKM is my choice, especially for 10mm. works better with less stress on my brass. function flawless, accuracy better than the shooter. use the LWD strictly for lead plinkers.

I bought a KKM barrel for my Custom Glock 20 and KKM will tell you if you shoot Underwood, Double Tap, Buffalo Bore, then they need to make a slight modification to the barrel which they do for free. I had this done and no issues at all.
I will be buying a KKM barrel for my G40 probably next month.
I haven't used Lone Wolf barrels but for $165 the KKM is very accurate and groups the Underwood 220gr hard cast lead into
nice tight groups. No smiles on the brass so that's a plus.

What is the actual modification KKM makes?

Yes I'm curious about that also. But anyway is not the 165 that bothers me.  It's the 230 for a threaded barrel and the 275 for the one with the COMP.