I'm not sure if this qualifies as a AR-15 but... I have a trade offer for a spikes tactical AR-15 9mm Pistol. I am wondering what would be a good asking price for it. It comes with a YHM quad rail and flip up sights. supposedly its brand new. Are there any pro's/con's? If anyone has any experience with one of these guys your input will be greatly appreciated. Here is a pic of basically what it looks like.