Trigger-locking apparatus, system, and method for semiautomatic firearms

What is this patent about?

’067 is related to the field of firearm trigger mechanisms, specifically focusing on safety and timing controls for semi-automatic systems. In high-performance or dual-mode triggers—such as those that fire on both the pull and the release—maintaining the correct sequence of mechanical events is critical. Without precise timing, a firearm may experience hammer-follow, light primer strikes, or jams if the trigger is actuated before the bolt or carrier has fully returned to the ready position.

The underlying idea behind ’067 is to utilize the physical position of the reciprocating action to mechanically gate the trigger’s movement. By using a dedicated locking component that is physically displaced by the bolt carrier, the system ensures the trigger is only operable when the firearm is safely in-battery. This creates a hardware-level synchronization between the cycling of the action and the user’s ability to initiate the next firing sequence, effectively preventing out-of-battery malfunctions.

The claims of ’067 focus on a movable structure that toggles between a permissive state and a restrictive state based on direct contact with the carrier assembly. The independent claims specifically describe a mechanism that is held in an unlocked position by the carrier when the action is closed, but transitions to a locked position—restricting trigger movement—once the carrier moves rearward during a firing cycle. Crucially, the transition to this locked state is designed to occur only after the trigger is released, ensuring the cycle completes safely.

In practice, this invention acts as a timed trigger lock that prevents the shooter from interacting with the fire control group while the action is in motion. When the bolt carrier moves forward to chamber a round, it strikes or pushes a lever or plunger, moving it out of the way of the trigger. As soon as the shot is fired and the carrier recoils, the locking structure is released and, biased by a spring, moves back into a geometry that physically blocks the trigger from being pulled or released again until the cycle is finished.

This approach differs from standard disconnectors by providing a positive mechanical lock on the trigger itself rather than just managing the hammer's sear engagement. By integrating a secondary disconnector member that is also controlled by this timing structure, the invention prevents the hammer from falling prematurely. This dual-layered protection is especially vital for pull-and-release triggers, where it eliminates the risk of the 'release' shot occurring before the action has fully supported the next cartridge.