Upgrading the Viper-5 will all but ensure you have a solid workhorse primary to carry you through the Zone.
Upgrade
Prerequisite
Slot
Stat Change
Automatic Two-Stage Gas Regulator
N/A
Body
Wear and tear reduced by 15%.
Individual Adjustment
Movement while aiming improved by 15%.
Other Viper-5s you find in the world will still be 9mm.
Jump onto or break the boxes to reveal a stash containing the Drum Mag and some other supplies.
These locations are tough to reach, especially from anywhere in the early game.
The Zone has something to discover, no matter how you go about it.
