How to remove or install the trigger mechanism
Removal
Perform a safety check.
Press trigger mechanism lock pins on the right side. Pull them all the way to the left side (the pins remain connected).
Lift the bolt carrier stop lever.
Remove the trigger mechanism.
Installation
Perform a safety check.
Press trigger mechanism lock pins on the right side. Pull them all the way to the left side (the pins remain connected).
Lift the bolt carrier stop lever.
Insert the trigger mechanism. Make sure that the long side of the mechanism housing is facing forward.
Close the bolt carrier stop lever and push in the pins.