First time I'd heard of it. 7.3 pounds. Wholesale under $2,300 and in stock at distributors now.
Damn, I have more than that in the LR-308 I built using the 2A Xanthos and lightweight titanium parts and got the Form 1 back on it about 6 weeks ago for the 12.5" barrel. Mine is a good bit lighter, but it ain't a factory-supported piston system either.