Stanley CT10C Heavy Duty Staple Gun/Cable Tacker "put connect stapler" Questions

...to know how can i assemble it back together, any ideas? I borrowed my sister in law's PowerShot to put new upholstery on some chairs and after TWO successful staples, it quit working. Any ideas? The ...

...stapler. Damaged or cracked this will need to be replaced. Not difficult and easy to DIY job. Do NOT hook up to air when doing this service. Dirt and grim can also jam the unit. Clean lightly oil, ...