thanks yes that gun have instaled the extreme trigger , extreme firing pin , extreme spring, Dawson front sight , armanov grips, one piece sear , r5 interruptor and just get the titan hammer but not installed yet y put it to try but give me more wiggle in the single acction so just get back to the normal hammer until more test .. I think I need another interruptor to fit the new titan hammer . yes that book is awesome just get it to..