39 slide on 27 receiver and vice versa?

[tjm]

I tried searching but didn't seem to ask the question correctly.

Does 39 slide fit 26, 27 and 33 receivers and vice versa? Thanks

[MSgt Dotson]

I believe the frames are indeed indentical, but the assorted ejectors will be shaped differently...

[mhmills]

The trigger bar and ejectors are different.

[tjm]

So they are different enough that a 39 slide would not function on a 27 receiver and vice versa? They are not cross compatible?

[DannyR]

They are only compatible if you change the ejector, trigger bar and magazine.

[kazager]

I swap my 17 & 37, and my 23 & 38, only the ejectors are different between those (and it works without changing the ejectors in both). What exactly is different about the trigger bars? A picture might help.