What other models K Frames are the same as an XG?

Just wondering if all the "X" models use the same K frame except the "XH"??
My understanding is they do have the same weld in K frame but I'm not 100% sure, can someone clarify this for me before I go and possibly buy something I can't use.
If it helps I need a new K frame welded into my XG and have found an Old XE which is suitable if they will swap over.
Thanks in advance guys
My understanding is they do have the same weld in K frame but I'm not 100% sure, can someone clarify this for me before I go and possibly buy something I can't use.
If it helps I need a new K frame welded into my XG and have found an Old XE which is suitable if they will swap over.
Thanks in advance guys