Apparatus for installing explosively driven fasteners and fasteners for use therewith

A tool for installing an explosively driven fastener, the fastener including a nail and an explosive load attached to the nail, said tool comprising:

• a trigger body;
• a firing pin holder located within said trigger body, said firing pin holder having a proximal and a distal end;
• a firing spring coupled to said firing pin holder and arranged to bias said firing pin holder out of said trigger body;
• a firing pin, said firing pin having a proximal end and a distal end, said distal end being pointed, said firing pin being separate from said firing pin holder, said proximal end of said firing pin being removably coupled to said distal end of said firing pin holder;
• a first muzzle having a proximal end and a distal end, said proximal end arranged to receive said firing pin and said distal end arranged to receive the fastener, such that
• when the fastener is placed in the distal end of the first muzzle and the firing pin holder is biased our of the trigger body by the firing spring, the firing pin strikes the explosive load causing the explosive load to explode and drive the nail out of the first muzzle.