The Early GCANewletter issue from the winter 1988 Vol 2 Number 4, had an article on gas trap serial number 6902 by Bill Blanch (Blanch was a Winchester collector) The owner of this sectionalized rifle told Blanch that it came from the Hawaiiian Ordnance Depot. The early SA SPG stock was cut away to show the receiver and operating rod. The top of the bolt was also sectionalized to show the firing pin. This rifle had the later no trap gas cylinder and was not sectionalized. This rifle still had the keystone spring and comp spring, early sights and slant cut operating rod. Blanch did note that the trigger housing was marked D28290 W.R.A.