The magazine holds the nails/staples. There are two magazine types, “stick” and “coil”. Stick nailer magazines have a “ribbon” spring that puts pressure on the rack of nails, to advance them into the nose of the gun. If your nailer doesn’t advance nails, try replacing this ribbon spring.
This item fits the following models:
3-Nailer Combo Kit w/ Accessories
3-Nailer Combo Kit
1/4" x 50 Ft Noodle Air Hose with Coupler and Plug