How do you reassemble a topper jr 410?

To reassemble a Topper Jr 410, start by ensuring all parts are clean and dry. Begin by placing the barrel back onto the receiver, aligning the locking lugs properly. Next, reinsert the bolt and ensure it is locked in place, followed by reattaching the trigger assembly. Finally, check that all screws are tightened and the action cycles smoothly before testing the firearm for function.