One thing I like beside the super easy installation, is the the trigger has 4-set screws, 2-installation screws came pre-installed in the housing body of the trigger. You tighten those set screw so the trigger does NOT wiggle and lock the trigger and hammer pins in place. Then, you set 2-more screw on the top of the set installation screws to lock the installation screws down. This way, no need to have anti-rolling pins, AND, the trigger housing has 0 movements. And, the set installation screws do not come off.
The curve trigger guard is a FREEBIE and it is fixed and does not rotate open. The purpose is to allow use of winter gloves while shooting. I noticed the SIG factory trigger guard does not have a spring to keep it rotated to the grip side.
I also got a FREE firing pin, but I saved for later use.
