Made of Stainless steel (SUS303)
CNC all Machined.
We machined to insert to the Trigger body easily because under powered setting,spring push the Spring Guide strongly.
So be difficult to insert the setpin from bottom of the Trigger.But this Setpin has a ROUND TOP & GUIDE slot.
So setpin goes up along the Spring Guide.
This Setpin has 4 holes at the bottom, the side hole is for the wrench when pull out.
And front hole, it’s for adjustment of the trigger stroke.