The Wilson Combat TR-TTU Heavy Duty Flat Trigger delivers precision performance with an optimal 4.5-5 lb pull weight straight out of the box requiring no user adjustments or modifications.Wilson Combat TR-TTU Tactical Trigger Unit2-stage heavy duty flat trigger design4.5-5 lb trigger pull weightDrop-in installation with no adjustment screwsCNC precision machined from H13 steelDry film lube finish for smooth operationPositive trigger reset for reliable performanceEngineered for tactical applications and precision shooting this trigger combines advanced manufacturing with user-friendly installation for immediate performance enhancement.