Canon

BR55 battle rifle

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BR55 battle rifle
Marcus Stacker and Butkus in Another Day at the Beach.
A cropped screenshot of a weapon in Halo 2: Anniversary's campaign. Original image by User:JackVibe.
UI asset from Halo: Campaign Evolved of the BR55 battle rifle.
Two variants of the BR55.
Production overview

Manufacturer:

Misriah Armory[1]

Model series:

BR55

Type:

Bullpup battle rifle

Specifications

Length:

89.9 centimetres (35.4 in)[2][1][3]

Weight:

3.8 kilograms (8.4 lb)[2]

Ammunition type:

9.5×40mm M634 Experimental High-Powered Semi-Armor-Piercing[1]

Feed system:

36-round magazine[1]

Operation:

Short-stroke piston, rotating bolt, locked breech

Effective range:

900 meters[4][Note 1]

Service history

In service:

Human-Covenant War
Post-Covenant War conflicts

 

"When nothing else gets the job done, the BR55 Battle Rifle will do."
— Halo Encyclopedia: The Definitive Guide to the Halo Universe[5][2]

The BR55 Service Rifle is an infantry battle rifle in service within the armed forces of the United Nations Space Command.[1][3] Among UNSC service personnel, the BR55 has accumulated a number of nicknames including the "Monkey Wrench", "BR", and the "Big Boy".[5][2] It is notable for its powerful three-round burst fire and accurate 2× scope, making it more efficient at farther ranges than the MA5 series assault rifles.

Overview[edit]

Design details[edit]

The magazine loaded into the BR55 in Halo 2: Anniversary multiplayer.
A magazine used with the BR55 in Halo 2: Anniversary multiplayer.

The BR55 Service Rifle is a gas-operated, magazine-fed, mid-to-long range weapon capable of three fire modes;[3] semi-automatic,[5][2] fully automatic,[6] and a three-round burst-fire.[7][5][2] The weapon is most commonly fired in the latter of these modes.[8][9] The rifle has a bullpup layout, with a detachable 36-round box magazine loaded behind the grip and trigger, with a safety switch located above the handle. While serving to reduce the weapon's length, the rifled barrel of the weapon extends its total length to 89.9 centimetres (35.4 in). It is typically equipped with a three-pronged flash suppressor, though this attachment can be swapped out for others such as a suppressor.[10] As with the other weapons in Misriah Armory's battle rifle line, the BR55 fires 9.5x40mm M634 HP-SAP,[1] and 9.5x40mm SAP-HE.[3]

The BR55 is fitted with an optics rail above the barrel, complete with a mounting point for a telescopic sight. By default, the weapon is equipped with a so-called (and retroactively-named) "classic sight",[11] capable of x2 magnification.[1][8][9] It features no iron sights.

Overall, the weapon is considered to have high accuracy and high rate-of-fire, leading it to be popular among UNSC service personnel.[5][2]

The BR55 was one of the standard infantry rifles of the UNSC during the Covenant war.

Usage[edit]

While newly introduced into UNSC service at the onset of the Human-Covenant War, the BR55 quickly came to dominate all aspects of the military - becoming an extremely popular rifle throughout most of the military's branches.[1] While formally designated a battle rifle, in practice the weapon fulfils the battlefield role of a Designated Marksman Rifle,[4] and by 2548 had entirely eclipsed the pre-existing M392 DMR in all UNSC service except for the UNSC Army[3] - with the BR55HB upgrade fully-rep