The rebuild service kit will include most (if not all) components to rebuild compression in the pump. Typically the kit includes gaskets, rings and valves but these parts may be sold in separate kits. Remember to change out the oil to a straight 30W air compressor oil (if applicable) when rebuilding.
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