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G20 slide on Gen 4 G21 frame?

Discussion in 'The 10 Ring' started by xrmattaz, Jan 10, 2012.

  1. Searchy thing not working for me.

    No compatibility issues using my 3rd Gen G20 slide on my 4th Gen G21 frame, correct? Yes, I'd change out the ejector, and use the appropriate 10mm magazine.

    Missing anything else?
  2. HexHead


    Jul 16, 2009
    4th gen frame is set up for the dual RSA.

  3. arushus

    arushus Biggest Member

    Jul 22, 2011
    NE Oklahoma
    Im really not sure if this would work or not, interested to see the results...
  4. Picking up the 4th Gen G21 in a little bit.

    Understand the dual recoil spring thing, and realize the muzzle end of the rod is larger, but isn't the tail end the same diameter?

    Guess I'll find out in a few hours.
  5. Hex, you were correct, it's a no-go. The nose of the Gen 4 slide (frame) is cut quite a bit different than previous Gens.

    Oh well, I'll just enjoy my G20SF as is, and my new G21 4th Gen as is.