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USPc 40 Decocker Sticking...

Discussion in 'Heckler & Koch Forum' started by 3rdgen40, Mar 17, 2010.

  1. 3rdgen40

    3rdgen40 .45 fanatic

    7,704
    2
    May 3, 2008
    Arkansas
    Sometimes after I rack the slide and try to engage the decocker it will hang up or stick.Even with a good amount of force it will not budge.After trying several times it will finally go.This doen't happen very often.It works fine 99% of the time.It feels like the detent plate jambs against the pin that it rides on.I have cleaned and lubed it, but it still happens sometimes.
    I have 282 rounds through it so far.
    Any ideas ?
     
    Last edited: Mar 19, 2010
  2. Clem Eastwood

    Clem Eastwood

    1,667
    0
    Mar 7, 2004
    DFW, TX
    all Sam at HK (706-568-1906 ext. 245). He's one of the gunsmiths. that is his direct line
     


  3. H&K 4 LIFE

    H&K 4 LIFE Leonum A Ignis

    3,381
    2
    Jan 27, 2009
    CT
    I don't understand why you seem to have deleted the post.

    Did you resolve the issue? :dunno:
     
  4. 3rdgen40

    3rdgen40 .45 fanatic

    7,704
    2
    May 3, 2008
    Arkansas
    I'm gonna try to call later today.
     
  5. 3rdgen40

    3rdgen40 .45 fanatic

    7,704
    2
    May 3, 2008
    Arkansas
    Thought I might be overreacting again like I did about the plastic peeling off the locking block.:embarassed:
     
  6. H&K 4 LIFE

    H&K 4 LIFE Leonum A Ignis

    3,381
    2
    Jan 27, 2009
    CT
    I understand.

    The decocker should be a little stiff to operate, that is to say there should be a little resistance when decocking the hammer. If however, the decocker does not operate fairly free with the hammer already lowered then there may be something up.

    Check out the detent plate and sear axle to make sure everything is clean and in the proper place.

    [​IMG]

    In this photo, the detent plate is the plate marked "1+2" and the sear axle is the large post in the center of it. The sear axle should be flush with the detent plate.
     
  7. 3rdgen40

    3rdgen40 .45 fanatic

    7,704
    2
    May 3, 2008
    Arkansas
    Wow...I just checked it and the sear axle sticks out about 1/16" past the detent plate.I have not taken this gun apart other than field stripping it,BTW.
     
  8. H&K 4 LIFE

    H&K 4 LIFE Leonum A Ignis

    3,381
    2
    Jan 27, 2009
    CT
    Well, push it back in and check function. ;)
     
  9. 3rdgen40

    3rdgen40 .45 fanatic

    7,704
    2
    May 3, 2008
    Arkansas
    Okay,I got it pushed back in so that it sits flush with the detent plate.At first it would not go into safe mode.After working it several times,it seems okay now.I'm gonna sit here and work it into both safe and decock mode for awhile and see what happens.
     
  10. 3rdgen40

    3rdgen40 .45 fanatic

    7,704
    2
    May 3, 2008
    Arkansas
    H&K 4 Life....I think you nailed it.It is working smoothly now.Hasn't stuck one time.Thanks Brother...:wavey: