Gun Nuts Gi Style - Fire Control Group. Specifications for Gun Nuts Gi Style Fire Control Group: Manufacturer: Gun Nuts Trigger Shape: Curved Trigger Material: 8620 Steel Trigger Pull Weight: 6 lb Trigger Pin Size: 0.154 in Gun Make: AR Platform Finish: Phosphate Features of Gun Nuts Gi Style Fire Control Group Traditional Government Issued Semi Auto Mil Equivalent Phosphate Trigger / Hammer. Package Contents: Gun Nuts Gi Style Fire Control Group Gun Nuts SI-FCG-2: Gi Style - Fire Control Group