Wow, I can't believe but I'm not surprised at the responses. First of all, to all the internet experts, who has ever owned a Sig 516?
I have and although I no-longer have it as it was traded away for another special item, it was an outstanding rifle. I would buy another one and certainly own one long before getting a Noveske or KAC which are just another DI gun.
Mine was a US made one and it's quality was outstanding. Totally reliable and very light weight.
Remember many are still praising the HK 416, the Sig 516 was aided in it's design and development by one of the lead designers of the HK 416. He clearly stated that he attempted to correct errors made in the 416 with his new 516.
If you have an interest in a quality piston driven AR this is a great deal. If you want to turn this into a DI vs Piston thing, go buy another DI gun.
Check out some of the Sig Sauer testing videos on You Tube, with the Thai Army. Very impressive demos with the 516. In-fact much of what they demo can't reliable be done with a DI gun.
These are made in Germany as well, so one might expect a higher level of quality and control although my US made one was outstanding.
If I didn't have my HK MR223 and Swiss Arms guns, I'd be all over this deal.
Rich