Abstract: A timing attachment is described, for use in conjunction with a trigger and firing mechanism of a firearm, to enable adjustment of the timing action of such firearm. The attachment includes a saddle section and a ramp section. The saddle section is configured so as to enable the timing attachment to be seated on the trigger. The ramp section is connected to the saddle section, preferably integrally, and is operable to abut a cross piece in the form of a stationary frame member in the firearm. Securing means are also provided in the timing attachment, preferably in the saddle section, enabling the timing attachment to be adjustably secured to the trigger. This allows the ramp section to variably abut the cross piece and so cause adjustment of the timing action.