Microsoft does not allow advertising for firearms, ammunition, gun parts, knives marketed as weapons, or weapon accessories. Hunting and sporting equipment can also fall under this when primary use is violence.
Direct firearm SKUs, ammo, magazines, suppressors, scopes/optics specifically for firearms, tactical knives, brass knuckles, throwing stars, or replicas. Code 277 covers knives-as-weapons; 278 ammunition; 279 gun parts; 280 accessories.