IMPORTANT NOTICE: This product is ONLY for use in the "factory upgraded" models of the P320 which have the full complement safety enhancements. What It Does The Apex Curved Advanced Trigger for the "factory upgraded models" of the Sig Sauer P320 is a direct replacement to the factory curved trigger and reduces the trigger pull weight by approximately 35%. The trigger is easily installed without the need for tools or fixtures. Machined from billet steel. Expected Results – Direct drop-in replacement of factory curved trigger – Reduces trigger pull weight by approximately 35% – In X-Series models, reduces pull weight by approximately 10% and overall travel 15% – No tools required for installation – Maintains factory drop safety values Applicable To What Gun(s) Works with UPGRADED Sig Sauer P320 model pistols ONLY (including the X-Series). Not for use in non-factory upgraded P320 pistols. Does NOT function in the Sig Sauer P250. In The Package 1 ea. Curved Advanced Trigger