Hi-Capa/1911 Disconnector and Knockers

The Disconnector in an airsoft Hi-Capa/1911 prevents full-auto fire by controlling the link between the trigger and the sear, ensuring only one shot is fired per trigger pull. The Knocker (or valve knocker) is a part of the firing mechanism that strikes the magazine's gas valve to release the gas necessary for firing the BB and cycling the slide. Both components are crucial for the pistol's reliable semi-automatic operation and are often upgraded to steel for increased durability. 

Disconnector

• Function: Connects the trigger to the sear to fire the gun and then "disconnects" them after the hammer falls.

• Role in semi-auto: Allows the hammer to be cocked semi-automatically, but only allows a single shot to be fired when the trigger is pulled once.

• Prevents: Unintended full-auto fire by preventing continuous firing after a single trigger pull.

• Upgrade purpose: Prevents failure, especially in high-performance guns, where stock parts can wear down and cause full-auto firing. 

Knocker (Valve Knocker)

• Function: Strikes the gas valve on the magazine to release a burst of gas.

• Role in operation: This gas propels the BB and also drives the slide backward in a "blowback" action, which re-cocks the hammer and resets the trigger/disconnector for the next shot.

• Upgrade purpose: Upgraded knocker parts can improve the consistency and reliability of gas release and overall firing system performance.