I had built 7 AR-15's prior to buying my AR-556. I caught them (Model 8500) on sale for $449 plus FREE shipping at GRAB A GUN 4 years ago in July. HELL, who could pass up a deal like that? Not me! So, I ordered 2 of them, one for me and one for my son. I changed a few things and added a few things, to my liking. I was looking around on GAG earlier and saw that the Ruger AR-556 was $699! HOLY SH**! Just a year ago it was $479. It looks as if panic buying has hit the AR market as well. In about 6 months I feel the AR market will be flooded with panic buyers wanting to sell their panic bought AR's. That will be the right time to buy another one, used, for a great price!