KKM 10mm conversion barrel for Glock 41.

[Bear44]

Put simply, it works!

Dropped the barrel, a 24lb spring and Glock 20 mags in and it ran like a sewing machine. Accurate, too. Palm size groups at 25 yards. Recoil was also very manageable.

I wasn't shooting the typical weak ass commercial loads, either. Grizzly 180gr jacketed HP with a MV of 1350fps. They generate around 725 foot pounds at the muzzle.

This got me into a 10mm long slide for around $220 rather than over $600 for a Glock 40. It weighs less than a Glock 40, too.

 

[WLhunter]

Sweet!

 

[Glockadopoulos]

Good news that you didn't have to replace the extractor and ejector! I may get one for my G21. Was it a regular G40 barrel, or a 41-10mm conversion barrel? I'm assuming the 45 barrels have a larger outside diameter than the 10mm barrels.

 

[Bear44]

Good news that you didn't have to replace the extractor and ejector! I may get one for my G21. Was it a regular G40 barrel, or a 41-10mm conversion barrel? I'm assuming the 45 barrels have a larger outside diameter than the 10mm barrels.

It's a conversion barrel. 41-10mm.

No problem with the extractor and ejector. Brass was flying out with authority.

 

[Porter Rockwell]

That's awesome as the slide of the 41 is significantly thinner than the 40 in 10mm right?

 

[Triathloncoach]

Can it use Glock 40 Caliber Magazines? You can likely fire 40 caliber S&W out of it too.

 

[Bear44]

That's awesome as the slide of the 41 is significantly thinner than the 40 in 10mm right?

Yes it is. I was concerned about the recoil damaging the weapon and when I contacted KKM about recommendations on spring weight they said "You'll have to figure that out on your own."

I'll admit I was a little cautious the first couple of times I fired it.

 

[Bear44]

Can it use Glock 40 Caliber Magazines? You can likely fire 40 caliber S&W out of it too.

No, the 40 S&W mags are too narrow. Also, in semi autos the head space is determined off of the case neck edge, so 40 S&W would go too far into the chamber.

 

[medium187mph]

Yes it is. I was concerned about the recoil damaging the weapon and when I contacted KKM about recommendations on spring weight they said "You'll have to figure that out on your own."

I'll admit I was a little cautious the first couple of times I fired it.

 

[Bear44]