Spike's Tactical Flat Top Upper w/Ejection Port Door, 9MM, Black Finish SFT902D Spikes Tactical's mission is simple" Spikes strives to build the highest quality products and offer them at the best possible price to the consumer. It doesn't matter if you are simply a gun enthusiast" a competitive 3 gun shooter or a military or law enforcement professional" Spikes rifles will serve you well and won't let you down when it counts and Spikes guarantees it. Same high quality 9mm upper used on Spikes builds.