A rare photo of a SOG recon team member with the XM21 sniper rifle. Operating in the Daniel Boone AO (Cambodia) the sniper rifle was more feasible due to the more open terrain.
A few other items to note are the WW2 leggings, the V40 mini grenades beside the rifle and the tropical rucksack.
That must be pretty late in the war if they had M203 Grenade Launchers.
those have never been seen by the public before