Description
The Timney Triggers 683 is a drop-in replacement trigger designed specifically for the Sig MPX platform. This single-stage, straight-shoe trigger is factory tuned to a crisp 4.5 lb pull weight with no creep, delivering a clean, consistent break right out of the box on both 9mm Sig MPX pistol and rifle configurations.
Built as a self-contained drop-in module, the 683 requires no fitting. It installs directly into the Sig MPX lower and makes use of the rifle’s original hammer and trigger pins, along with the factory safety. The trigger is constructed from steel with an aluminum housing and finished in black for durable, corrosion-resistant service.
Timney is the recognized market leader for Sig replacement rifle triggers. The 683 is engineered to provide a meaningful upgrade over the factory MPX trigger, making it an excellent choice for competition, duty, or defensive pistol-caliber carbine applications.









