When it comes to tactical gear, there are loads of different items that you can mount on a tactical vest. To put it simply, most tactical molle vests have the MOLLE (Modular Lightweight Load-carrying equipment), or PALS (Pouch Attachment Ladder System), which allows users to mount any compatible equipment.
Most commonly, people who use AR-15s will have one triple mag pouch on the front to carry their ammo. Some may even mount a pistol holder on the chest area for quick access to a side arm. Other tactical gear that is usually mounted on Tactical vests includes medical kits, flashlight pouches, grenade pouches, knives, pepper spray, tasers, communication systems, and other pouches to carry small items and accessories.