Nailer

A nailer, comprising a housing, a handle that connects the housing, an combustion chamber and a cylinder inside the housing, a piston whose rear end is located inside the cylinder, a cage that covers an exterior front end of the cylinder, with a front end abutting on that of the cylinder, wherein the combustion chamber wraps an exterior rear end of the cylinder, and a rear end of the cage is connected with a front end of the combustion chamber, a rear cap positioned on a rear end of the housing, a cylinder head on the rear end of the cylinder, an O-ring inside the cylinder, a nose piece connected with a front end of the housing, a pin guide whose rear end is inside the nose piece, and a track assembly located below and connected with the nose piece, characterized in that of the nailer further comprises a pin guide component that can separately connect the nailer and comprises a pin guide, a nose piece, a guide sleeve, an adjusting threaded rod, a knob, a rear sleeve and a piston guide, wherein a lower end of the guide sleeve is linked with the pin guide;

• a front end of the adjusting threaded rod is connected with an upper end of the guide sleeve while a rear end of the adjusting threaded rod is linked with an upper end of the rear sleeve;
• the knob is inserted into the adjusting threaded rod and is fixed between the upper end of the guide sleeve and that of the rear sleeve;
• a bottom end of the rear sleeve is positioned at a rear end of the pin guide and abuts on the front end of the cage;
• a front end of the piston guide is inside the rear sleeve while a bottom rear end of the piston guide connects the cage.