Gadget Sniper is a gadget gear perk that makes throwing knives and throwing axes lock onto targets. It turns thrown weapons into reliable silent kills.
When you throw a knife or axe, it tracks the target instead of flying straight. You hit moving soldiers far more often.
Yes, if you use throwables for stealth kills. It makes them one of the best silent tools in the game.
Feedback Loop refills gadget ammo on gadget kills, and Digital Camo on the Dark Tech Mask helps stealth.