SIG SAUER ProForce M17 Custom Trigger  - Straight trigger for faster, easier trigger pull - Easily adjust the trigger stroke and wall on the fly Never settle when it comes to your SIG SAUER ProForce M17, further customize your build with a fully adjustable straight custom trigger. Easily installed in SIG AIR's simple one piece trigger unit, after which you can simply adjust both the stroke and reset distance with a hex key. Faster trigger response, more precise shots, fully adjustable. Instructions: - Adjustment screw A: Adjusts the length of the wall before the sear disengages. - Adjustment screw B: Adjusts the distance to reset the action. - If the trigger stroke is adjusted to the maximum it may make it impossible for the sear to engage, so please adjust the stroke at intervals. - Please use a 1.5mm hex key for adjustment. - The use of thread-locker is advised as your adjustments may slowly loosen over time.