Adjustable. Custom. Precision. Repeatable Accuracy is everything for confidence and success. There are several factors that go into making an accurate crossbow, at the top of the list is a clean, consistent breaking trigger. The Pro-Shot ACP (Adjustable Custom Precision) trigger system provides match-grade performance by Improving consistency and accuracy. Adjustable from 1 to 2-stage configurations. Consistent clean and crisp 3lb trigger pull with no creep. Frictionless Roller Catch Technology eliminates any grit from the sear and catch Silent manual safety Upgrade! Fits most Excalibur Crossbows shown below Standard (Micro 308 Short/315/335/355, Matrix 310/330/355/380/405/Sapphire, Phoenix/Vixen/Exocet 200/Exomax/Relayer Y25/Offspring) Bullpup models (Micro Suppressor, Matrix Bulldog 330/380/400)* Does not fit: Grizzly, GRZ2, G340, Axiom SMF, Ibex SMF, Matrix Cub, Matrix Sapphire, Equinox, Eclipse XT or Vortex *To use the Pro-Shot trigger with the older Exo series models the new #2006 scope mount also needs to be purchased to allow relocation of the arrow hold down spring from the trigger to the scope mount PRO-SHOT ACP STANDARD TRIGGER PRODUCT CODE: EXP73613 PRO-SHOT ACP BULLPUP TRIGGER PRODUCT CODE: EXP73614