I am seriously considering purchasing a Spikes Tactical ST15 16" LE Carbine, Does anyone here own one of these rifles or anything from Spikes? If so, I was wondering what kind of quality they are, what their customer service reputation is and who has the best prices on them. This will be my first purchase of an AR type rifle and from everything I can find on these, they seem to be pretty well made. The particular rifle I'm looking at is available at the following link. ST-15 16 M4 LE Carbine [STR5025-M4S] - $849.95 : Spikes Tactical. Would this make a quality first purchase for the following uses? Plinking, target shooting possible home/self defense, zombie invasion etc?