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  1. #1
    Join Date
    Feb 2006
    The Big Northeastern NPE

    Default Tech Question: Gen 3 Slide on Gen 4 Frame

    I got a solid deal on a pristine used Gen 4 G17.

    I am in possession of a Gen 3 slide from a G34 which has been milled for an RMR by Suarez, and a brand new RMR.

    Will the Gen 3 slide fit the Gen 4 frame? Alternative is to sell the slide (as well as a Gen 3 G19 slide and Gen 4 G17 slide) to finance a new Suarez slide for the Gen 4 17 with all the bells & whistles.


  2. #2
    Join Date
    Mar 2011
    Western WA
    No, they are not compatible.

    If you're ever going to go the PDW route, pick up a gen 3 frame. Save the milled gen 3 slide for that project. Keep your eyes open because Gabe sells them from time to time for a very reasonable price.
    Brent Yamamoto
    Suarez International Tier 1 Staff Instructor

    Ready, willing, able. Bring it.

    Upcoming classes:
    Zero to Five Feet Gunfighting

  3. #3
    Join Date
    Mar 2013
    No due to recoil spring differences.

    The slide is machined differently for the larger captured spring in the gen4.

    ETA: Damn! Brent best me to the draw. :-)

  4. #4
    Join Date
    Mar 2004
    I have a Gen 3 Suarez G34 slide sitting on a Gen 4 frame as a PDW right now. Josh at Suarez assured me it would work with a Gen 3 recoil assembly and it has been 100%.

    eta: I picked up a gen 3 frame for it, but I would have to remove material from the bottom lug of my fitted Barsto barrel to make it work, and I am presently unwilling to do that.
    Last edited by baker; 12-12-2017 at 06:42 PM.
    Every normal man must be tempted at times to spit upon his hands, hoist the black flag, and begin slitting throats.

    H. L. Mencken

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