Actually it was a "XG-1" and it was never in production. Several cutaway prototype`s exsist. These were sent to Major dealers across the country to promote it. A full scale rifle, with cutaways...to show the operating mechanicals of it. Less than two dozen of these cutaway prototypes exsist.....some say less than a dozen. I know of "one" in California......they command some very serious coin and are usally traded in private circles.
Ruger tried to market it prior to debugging it, for mass orders to fund the design.....It was doomed from the start. Receivers cracking, excessive throat errosion and poor accuracy. The result of bad everything. The M1a was already dead and dying in favor of the M16 and had been for decades.....not to mention the XG-1 was to light to control, even in semi-auto fire. Hidden from most, it is one of the biggest flops to grace Ruger`s legacy. A true, un-thought out and way behind the times project......that left egg on every face involved with it. LTS