Rounds may refer to the following:
- Armor Piercing Rounds - Type of ammo used in most UNSC small arms weapons.
- Shredder Round - Rounds usually used as a replacement for Armor Piercing Rounds.
- Stun Rounds - Used in training the SPARTAN-II's, SPARTAN-III's and other military.
- TTR Rounds - Used to simulate live fire in military training in Halo: Contact Harvest.
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