How do you breakdown mossberg 600at?

To break down a Mossberg 600AT, first ensure the shotgun is unloaded by removing any ammunition from the chamber and magazine. Next, push the slide release button on the right side of the receiver while pulling the fore-end forward to remove it from the action. Then, pull the trigger guard down to release the trigger group and remove it from the receiver. Finally, you can separate the barrel from the receiver by unscrewing the magazine cap and sliding the barrel off. Always refer to the owner's manual for specific guidance and safety precautions.