What type of trigger mechanism do most semi-automatic firearms use?

Most semi-automatic firearms typically employ a trigger mechanism that allows for both single-action and double-action operations. In the single-action mode, the user must manually cock the hammer (or striker), which prepares the firearm for a trigger pull that only releases the firing mechanism. This results in a lighter and often more precise trigger pull. In contrast, double-action mode allows the user to pull the trigger, which both cocks and releases the firing mechanism in one motion.

The versatility of having both modes enhances the functionality of semi-automatic firearms, catering to various preferences and situations. This design choice also allows manufacturers to create firearms that can accommodate different shooting styles and user comfort levels, thereby broadening their appeal to a wider range of shooters.

Various semi-automatic models, such as those designed by well-known firearm manufacturers, effectively demonstrate this dual-action capability, allowing for a user-friendly experience while promoting safe and efficient shooting practices.