This is the owner's second line bare-minimum for any scouting sniping work:
Savage 10FP-LE2 with Leupold scope and Choate Ultimate Sniper Stock
Arktis 1624 Chest rig
2 Nalgene bottles (1 lt./ 1 qt.)painted
50 rd. MTM reload box for 7.62mm ammo
Garmin GPS 12XL
USGI Lensatic compass
Field dressing and cravat taped together
Otis 7.62mm cleaning kit
Remington Rem-Oil
Fat-Jon survival kit
Camo-compac and camo stick
Bottle USGI insect reppellant
Bushnell Yardage Pro
REI monocular 8x
This is the minimum taken to the field for sniping work. Often an M4 is also carried, and on the first line there is always a pistol, usually a Sig-Sauer 229. Other pictures on this site show this configuration with the HSGI Shooter's buttpack, which is always a welcome addition, but not considered a bare essential.