Whilst having the FN Herstal P90, a staple for sci-fi movies, means already having a capable firearm or airsoft gun, going into the battle with it together with the FN-57 pistol is such a great combination as the pistol was made to work together with, as it can fire the same round, the FN 5.7×28mm. The FN-57 also has airsoft versions from the more reputable airsoft manufacturers, just finding the holster for it is a chore. Mr. Flannel Shirt, Garand Thumb, gives his take on this pistol in this video.