Description
The Ruger American Gen II ships with a serviceable trigger, but its factory reset and overall feel leave room for improvement that most serious bolt-gun shooters will eventually want to address. Timney’s 642C is a self-contained replacement unit designed to drop into the Gen II Centerfire action without requiring a gunsmith or any modification to the rifle’s existing safety hardware.
Because the trigger reuses the factory three-position safety, you retain the full function of that system — including the ability to lock the bolt closed — without any adaptation work. The unit arrives factory set at 3 lbs., which gives you a reference point that sits comfortably in the range most hunters expect for field use. From there, pull weight adjusts across a 2 to 4 lb. span, so a shooter who wants a lighter bench setting or a heavier margin for cold-weather gloved hands can dial the trigger to suit the application rather than working around a fixed break.
The housing is constructed from alloy with steel internal parts — a pairing that keeps mass manageable while placing hardened material where the sear surfaces actually contact and wear. Timney machines these components domestically and backs every trigger it builds with a lifetime warranty covering repair or replacement if the unit is ever damaged or becomes defective. Compatibility covers all Ruger American Gen II Centerfire rifles with the three-position safety; left-handed actions are not supported by this model.






