#### the gun first, punch out the trigger group pin. Hold the gun with the loading port facing upwards, seize the trigger group at the rear by the trigger guard and pull up until the trigger group comes free of the receiver. The cartridge stop and the cartridge interrupter will fall free once the trigger group is removed and are easily removed. The bolt slide and the elevator are removed from the bottom from where the trigger group was and the bolt is pushed forward until it exits the receiver through the barrel recess.
Putting it back together is done by reversing the process, the cartridge stop and interrupter must be held in place while the trigger group is replaced. Engage the front of the trigger group into the receiver slot then press down on the trigger guard with the palm of your hand and it will slide into place, then the pin can be replaced.