C&C Tac SIG Sauer M17 / M18 GBB Airsoft KD Style Dual Adjustable Pro Competition Trigger (Black)The C&C Tac Dual Adjustable Pro Competition Trigger is a lightweight, robust trigger designed for the SIG AIR P320 M17 M18 series gas airsoft pistols. The trigger is adjustable for the length of stroke and resets by using an Allen key. This allows users the ability to customize the trigger pull of their choice. Compatibility: SIG AIR P320 M17 Series Gas Airsoft Pistols SIG AIR P320 M18 Series Gas Airsoft Pistols Includes: x1 C&C Tac SIG Sauer M17 M18