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Anyone tried a Lone Wolf or KKM 40sw Barrel in the Gen 4 G20?

Discussion in 'The 10 Ring' started by wvtarheel, Jan 22, 2013.


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  1. wvtarheel

    wvtarheel
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    Nov 26, 2012
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    Just ordered a new Gen 4 G20 yesterday and I'm already excited to shoot it. Looking around it seems like the 40 S&W conversion barrel will save me some ammo costs when I take this to the range.

    BUT after watching the videos on the top of this page where weaker 10mm rounds caused problems for the glock employee, I'm wondering if I will need to install a different recoil spring or if the gen 4 G20 is just built for hotter rounds than the gen 3 was.

    Any insight?


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  2. JimIsland

    JimIsland
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    The .40 barrel is a good idea. I wouldn't touch anything on that G4 until you have put some Underwood through it and inspected the brass. It should run fine the way it is.
     

  3. edhead35

    edhead35
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    With the stock gen 4 barrel and 10.3gr of Blue dot behind a 180gr xtp I get very little bulging, barely visible.
     
  4. chucky2

    chucky2
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    I know you're asking about operation, but, I called KKM prior to ordering this barrel and asked about it working/fitting correctly in a Gen4 G20, and the guy I talked to said there should be no problems, their barrel was made to work in there w/o any type of Gen4 redesign.
     
  5. ryangt

    ryangt
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    Or you could save up a few extra bucks and get a turret press. Then save a ton more on ammo. 10mm costs just as much as a .40 to reload (except the brass).
     
  6. 21Glock

    21Glock
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    Location:
    outside Atlanta, GA.
    I have had my Gen 4 20 since it hit the market back in the summer. Got it at Ed's Public Safety.
    Great gun, have it with 6" 10mm KKM barrel since I shoot my handloads. Works flawlessly. No bulges or smileys even with the hottest handloads.

    Congrats, you'll love the Gen 4 20!
     
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