Apex action enhanced red trigger and duty/carry assembly - Apex Tactical Specialties Action Trigger Assembly Enhancement Kit

Definitely a vast improvement over the stock trigger. Comparing the flat trigger to the rounded, I would recommend the flat because it more closely matches the 1911 performance. If you choose to install this yourself, be sure to have the proper tools, workspace and watch several videos before beginning. Don't be afraid to stop and take it to your local gunsmith, if you have problems.