I have manage to find the person that scratched the markings into the butt of the rifle. The rifle was captured on the date marked on the butt, it was an ambush of 2 VC, one was killed in the contact and the other was wounded and found later when they searched the area. The rifle is from the WIA and the markings were scratched on the butt with the nose of an AK47 round. The officer wanted to ensure he could 'find' the rifle again after it was handed over to 1ATF when they got back from the mission as he wanted to present it to the officers mess. Needless to say the rifle never got presented to the mess.