an air compressor configured to generate pressurized air at a first pressure level;

an air storage tank;

a drop down air regulator located external to the air storage tank and configured to reduce the pressurized air from being at the first pressure level to being at a reduced second pressure level;

a first air supply hose configured to fluidly communicate pressurized air between the air compressor and the drop down air regulator; and

a pneumatically powered fastener driving tool including a fastener driver, the pneumatically powered fastener driving tool configured to either: (a) employ the pressurized air at the first pressure level to generate a first driving force on the fastener driver to drive a fastener; or (b) employ the pressurized air at the second reduced pressure level to generate a reduced second driving force on the fastener driver to drive the fastener; and

a second air supply hose configured to fluidly communicate pressurized air between the drop down regulator and the pneumatically powered fastener driving tool;

wherein the air storage tank is in fluid communication with the first air supply hose and the second air supply hose,

wherein the first air supply hose is removably mechanically and fluidly connected to the air compressor and the drop down regulator,

wherein the drop down regulator is removably mechanically and fluidly connected to the first check valve,

wherein the first check valve is directly removably mechanically and fluidly connected to the air storage tank,

wherein the air storage tank is directly removably mechanically and fluidly connected to a coupler,

wherein the coupler is directly removably mechanically and fluidly connected to the second air supply hose, and

wherein the second air supply hose is directly removably mechanically and fluidly connected to a pneumatic air connection coupler of the pneumatically powered fastener driving tool.