76300 and TA35112 are different part numbers for the same item. Tippmann has redesigned the Crossover trigger to lighten the weight and decrease the trigger pull force, and still meet ASTM standards. The trigger has no field replaceable parts. TA35035 has been updated to TA35112 Trigger Assembly Complete. It's lighter! Used with TA35129 Trigger Spring - Light. All Crossovers produced after March 25th 2013, around serial number 2550, have TA35112 already installed.