The Apex Tactical Specialties Flat Forward Set Trigger Kit is compatible with the P320 M17. Per the manufacturer:
For use in the Sig Sauer P320 pistols (with factory safety upgrade) with or without thumb safety, including the X-Series models. However, due to different internal dimensions of the mold, use in the Sub-Compact Grip Module is NOT recommended.
Now featuring our thumb safety compatible trigger bar.