Glock .40 S&W barrel question

This is a discussion on Glock .40 S&W barrel question within the Defensive Carry Guns forums, part of the Defensive Carry Discussions category; I was wondering if anyone can honestly answer this question. Why is the .40 S&W barrels that Glock uses unsupported? If people are afraid of ...

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Thread: Glock .40 S&W barrel question

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    Senior Member Array AdamSean's Avatar
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    Glock .40 S&W barrel question

    I was wondering if anyone can honestly answer this question. Why is the .40 S&W barrels that Glock uses unsupported? If people are afraid of a kaboom, then why don't they just make a supported barrel?

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    Ex Member Array barstoolguru's Avatar
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    It will digest more different brands/ bullets of ammo if the tolerances are not so tight; They will feed without jamming

    edit: lone wolf barrels are tighter

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    Senior Member Array AdamSean's Avatar
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    Gotcha. I have never had any problems before, I was just wondering since I use 180gr bullets.

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    Member Array genauwiedu's Avatar
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    Yep feed reliability. If glock made even the slightest change to improve casing support people would fly off the handle saying glock reliability is forever blown.

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    Senior Member Array AdamSean's Avatar
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    So I should probably NOT get a Bar-Sto after market barrel, huh?

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    Member Array genauwiedu's Avatar
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    Not sure on that brand but a friend of mine has a few different aftermarket barrels and they all feed poorly. His G20 will not even return to battery when using the lone wolf barrel.

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    I have shot the pee out of LW barrels and never had an issue.
    AZJD1968 likes this.
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    Ex Member Array Ram Rod's Avatar
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    You can get any number of aftermarket barrels for your 40S&W Glock. They may or may not improve on the OEM barrel. Thing is....as a well integrated tool.....you'll be changing things in ways and you may not want to open that can. The 40S&W cartridge approaches the max in pressure for the round and pistols that fire the 40S&W round need to be friendly to all types of bullet designs. The 40S&W holds a special place when it comes to firearms and cartridges. Kind of like the V-6 has a special place in the automotive world but the best sellers are 4cyl cars or 8cyl trucks. Pros and cons...........you can get the same HP out of top of the line 4cyl as you can a basic 6cyl. V-8 uses nothing but more gas and kicks them all back in the woods. Perspective. Best of luck nailing down your issues.

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    Quote Originally Posted by AdamSean View Post
    So I should probably NOT get a Bar-Sto after market barrel, huh?
    Depends on what you want the gun to do. Everything is a tradeoff. In the jet engine biz, we say "good, fast, cheap - pick two." You want tops in reliability? OK, stick with the stock barrel. Want the best accuracy? Get a BarSto but be prepared to deal with a tight(er) chamber.

    So it boils down to your intended use for the gun.
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    Distinguished Member Array Brady's Avatar
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    I'm not a Glock person but I thought I had read that the newer Glocks now come with a fully supported barrel. Did I get it wrong?
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    Senior Member Array Cokeman's Avatar
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    Quote Originally Posted by AdamSean View Post
    I was wondering if anyone can honestly answer this question. Why is the .40 S&W barrels that Glock uses unsupported? If people are afraid of a kaboom, then why don't they just make a supported barrel?
    We're not.

    Quote Originally Posted by genauwiedu View Post
    Yep feed reliability. If glock made even the slightest change to improve casing support people would fly off the handle saying glock reliability is forever blown.
    Glock has changed the barrel since they introduced the .40 guns because of complaints of unsupported chambers. Reliability didn't change. People didn't fly off any handles.
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    Senior Member Array sonnycrocket's Avatar
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    Quote Originally Posted by AdamSean View Post
    I was wondering if anyone can honestly answer this question. Why is the .40 S&W barrels that Glock uses unsupported? If people are afraid of a kaboom, then why don't they just make a supported barrel?
    Kabooms have nothing to do with an un supported barrel and todays glock 40s fixed this BULGE problem -glocks work well because they are loose I assume, aftermarket barrels are tighter
    but I have tried both and saw no differences in my accuracy ..

  14. #13
    Distinguished Member Array AZJD1968's Avatar
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    I own a G27, with a Lone wolf 9mm conversion and a Glock .357sig barrel for the G33
    I own a G23 with a Lone Wolf 9mm conversion and a Lone Wolf .357sig barrel
    I own a G22 with a Storm Lake 9mm conversion and a Glock .357sig barrel for the G31
    I own a G30SF with a KKM 10mm conversion barrel.

    It has been my experience, that the aftermarket barrels are just as reliable in my glocks as the factory barrels that they have come with.

    I have no complaints.
    Stop whining and go do something that makes a difference!
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