The .380 is a bit different than the .45 acp. If you're interested, PM me and I'll scan the original manual and send you the images.
But the manual has only 5 steps.
To Disassemble
1. it is not necessary to dissasemble the Backu DAO for normal cleaning and lubricating. Refer to Care and Cleaning.
2. While pointing the Backup DAO in a safe direction and while keeping your finger off the trigger, remove the magazine fro the BAckup DAO.
3. With the Backup DAO pointeing in a safe direction without touching the trigger, pull the slide back and verify a round of ammunition is not in the chamber. If a round is in the chambber, eject the round by pulling the slide all the way back.
4. Pull slide back and lineup cutout in slide with takedown pin. Push pin out to the left, them remove the slide assembly off the frame towards the front.
5. Remove recoil rod and sprin, then remove barrel from slide. Further disassembly is not necessary and may void warranty.
To Assemble
1. Install barrel into slide from bottom, then install recoild rod and spring into slide.
2. Install slide assembly onto frame.
3. Pull slide back even with the back of the frame and push the takedown pin in until it contacts the slide. Pull the slide back to cutout and push takedown pin into counter bore.
4. Check for proper funcitoning before loading.
Care and Cleaning
The AMT BAckup DAO pistol should be cleaned at frequent intervals. Frequency of claning depends on the frequency of use of the pistol. Accumulation of powder fouling in the breach and chamber area may affect the funtioning of the pistol causing jamming and misfiring. If the conditions develop, clean the pistol. Some foreign brands of ammunition use corrosive primers which necessitates cleaning of the barrel and slide with hot water prior to the cleaning recommended below.
WARNING: ENSURE THE PISTO IS NOT LOADED BY REMOVING THE MAGAZINE AND VISUALLY CHECKING THE CHANBER TO ENSURE THE CHAMBER IS EMPTY.
To clean the BAckup DAO without disassembly, pull the slide back all the way to the rear position. Insert a cleaning rod with solvent coated patch through the bore and changer, then run clean, dry patches through intil a pach comes out clean.
If the Backup DAO is partially disassembled for claning, scrub or wipe clean all areas of the breach, slide, magazine, chamber and bore with a clean patch wetted with a gun cleaning solvent. After all areas hav eben thoughly cleand wipe again with a lightly oiled cloth.
After cleaning Backup DAO, lubricate slide rails and outside diameter of barrel where it rides in front of the slide with Firepower FP-10.
That's what the manual has to say.