Nose assembly for a floor nail gun

A nose assembly for a floor nail gun, the floor nail gun including a magazine for storing nails therein and a barrel connected to the magazine, the nail gun being operable to drive the nails through the barrel and into a floor board and a floor disposed below the floor board, the floor board having a top surface and a lateral side formed with a tongue, said nose assembly comprising:

• a base adapted to be connected to the magazine and the barrel and having a bottom end that has a first base contact surface and that is formed with a bottom protrusion defining a base reference surface, said base reference surface and said first base contact surface having different heights along a vertical direction;
• a nose plate disposed below and aligned with said base in the vertical direction, and having an abutting end defining a nose abutting surface that is adapted to abut against the top surface of the floor board, and a contact end opposite to said abutting end, said contact end of said nose plate having first and second nose contact surfaces that have different heights along the vertical direction;
• and
• an urging mechanism interconnecting said base and said nose plate for urging said nose plate to move toward said base;
• wherein said nose plate is movable relative to said base against an urging force of said urging mechanism from a first position, in which one of said first and second nose contact surfaces is urged by said urging mechanism to abut against said first base contact surface, to an intermediary position, in which said contact end of said nose plate is spaced apart from said bottom end of said base, and is further movable relative to said base from the intermediary position to a second position, in which the other of said first and second nose contact surfaces is urged by said urging mechanism to abut against said first base contact surface.