Thank you, imshur!
Cedar Falls Tactical in Park Hills, Missouri. They have really good customer service. Installed a new trigger and gas block for my DPMS, charging very little for the install. When I was having extraction issues they polished my receiver, checked the extraction springs, and opened up the barrel gas port. No charge!
These guys are my first "go to" gun shop / armorer since moving here 14 years ago. If you are in the area and need any work done, ask for Ben. He really helped me out.