Which device is activated by recoil to operate the mechanical interlock?

Which device is activated by recoil to operate the mechanical interlock?

• A. Bolt & Carrier
• B. In-Battery Sensor
• C. Tube Retraction System
• D. Rocker

Answer: (D)

Recoil cycling drives a small lever called a rocker, which acts as the link to the mechanical interlock. As the bolt carrier moves rearward from recoil, it pushes on or nudges the rocker, causing it to pivot and engage or disengage the interlock that controls the trigger/sear. This levered motion is what translates the impulse of recoil into the interlock’s action, ensuring the firearm can only fire when the mechanism is in the proper position. The bolt and carrier perform the cycling, but the rocker is the component that specifically responds to recoil to operate the interlock.

Recoil cycling drives a small lever called a rocker, which acts as the link to the mechanical interlock. As the bolt carrier moves rearward from recoil, it pushes on or nudges the rocker, causing it to pivot and engage or disengage the interlock that controls the trigger/sear. This levered motion is what translates the impulse of recoil into the interlock’s action, ensuring the firearm can only fire when the mechanism is in the proper position. The bolt and carrier perform the cycling, but the rocker is the component that specifically responds to recoil to operate the interlock.