Battle rifle

There are three references of the following Battle Rifle in the Halo Universe:

These could refer to the following:

Human

 * M392 Designated Marksman Rifle
 * XBR55 Battle Rifle - Halo: Contact Harvest-era Prototype Battle Rifle.
 * BR55 Battle Rifle - Halo 2-era Battle Rifle.
 * BR55HB SR Battle Rifle - Halo 3-era Battle Rifle.

Covenant

 * Type-31 Rifle
 * Type-51 Carbine