I received a PX4 storm form my birthday last year and still trying to figure what model this is. It was purchased from Gander Outdoors. It has a tactical loop under the grip and night sights. I owned one previously and it didn't come stock this way. It also didnt come with the back straps. I contacted Beretta and I was told that its was ordered as a part of a military order but thats all they would say. Any thoughts ?