Thanks guys. I knew the cheapest part rule but it was oh so close. The spring came with a bolt catch assembly kit, so the stubborn part of me refuses to believe its the wrong spring.
The handguard is just sitting there, not attached. There isnt a barrel nut installed in that picture.
What I ordered:
What I need:
The hoque package has a molded space that i figured was for the screw. Maybe it doesnt come included. Im new to all of this.
HiBC you nailed it. 2 stage Rock river nm trigger group.