The SIG SAUER P365 factory flat trigger is a direct replacement to stock triggers. The flat trigger design gives shooters a lower position on the trigger, which will increase leverage for a smoother, more consistent pull. Installation of these parts kits require disassembly of firearms beyond a field-stripped condition. Improper installation may result in malfunction, serious injury, or death. SIG SAUER requires that only certified SIG SAUER armorers install these parts kits. WARNING: These parts kits are intended to be installed as a full unit. Any substitution of included parts may be incompatible and may lead to malfunction, serious injury, or death.