Yes, it's heavy. The rifle probably weighs almost 12 pounds with a 15 round pmag attached. The optic setup is not ideal in terms of bulk and added weight, but it fit my purpose for the rifle perfectly.
I got a super deal on the EOTech 512 at a gun show, and paid $325 for it brand new. I paid about retail for the Vortex ($215). Retail value on both is about $700, I got both for $550.
I've already got about 900 rounds through it, and has been great.
Where do you shoot at?
I also recently got a Sig 516 Patrol in black.... I got it for a steal during a memorial day sale ($1100). I had a Yankee Hill Phantom 5C1 Brake/Comp installed as well. With gunsmithing fees (pin/welding the MD, pinning the stock) the entire thing cost me $1185. I also recently added an EOTech 512 and a Vortex VMX-3T 3x Magnifier, as well as the Magpul MOE VFG. I absolutely love this rifle.