Just discovered that my 17.5 and 34.5 have different ejectors. Researching further, discovered different part numbers for the trigger housing/ejector for the G17/19 (47208) and the G19X/26/34.5 (33854). Apparently the G17 comes with the 30274 ejector, and the 19X/26/34 with the 47021 ejector. This was surprising to me, considering the 17/19X/34 share a (mostly) common frame, and Glock's usual desire to use common parts.