I have a confirmed FBI 1076, Oklahoma Office. Serial is TFK83XX. It has the cross checked grip. My slide does not have warning but the gun will fire with mag removed. Also has night sights. My original blue box also says FBI. I also have 3 regular 1076's one that i carry daily. honestly I can't see any discernable difference between the two guns. Function and feel are identical. I also have all three types of grips that were made for this series.