BR55 battle rifle

The BR55 Battle Rifle is a United Nations Space Command infantry service rifle and is the older of the BR55 series rifles (the HB SR variant being the newest, phasing out the original in Halo 3). The BR55 is first seen in Halo 2.

Introduction
The BR55 Battle Rifle is a good, all-around weapon, being the much more accurate combat rifle, that replaced the MA5B Assault Rifle from Halo: Combat Evolved. It is the older variant of the newer BR55HB SR Battle Rifle and is available in Halo 2. It is the equivalent of the Covenant's Type-51 Carbine and fires in three round bursts, similar to an M-16.

Summary
The BR55 Battle Rifle, is a gas-operated, magazine-fed, mid-to-long range weapon capable of semi-automatic and burst firing modes. Prototypes were used in 2525 at Harvest, but it entered active service in 2524. The weapon is capable of fully-automatic fire, but only the three -round burst mode is encountered in game. It fires the M634 9.5x40mm X-HP-SAP round from a 36-round magazine and has a scope attachment with a 2x magnification. It does reasonable damage to enemies being able to kill most within a few bursts (normally 4 when enemy is fully shielded). Its accuracy and range are also reasonably high, being able to hit a target from medium to semi-long ranges. It is highly recommended to always have one on hand on higher difficulty levels.

Advantages
Designated the BR55 Battle Rifle, it has reasonably high power, a decent rate of fire, and high accuracy with an electronic 2x magnification scope attachment; it can be used to deliver three-shot-bursts at medium ranges. In multiplayer, three body shots and one head shot will kill a fully-shielded opponent, assuming the player does not have an overshield. This weapon, will kill an unshielded enemy, in a single head shot. Target the head and a dot will appear in your reticle. This requires that only one of the three rounds, from a burst hit an enemy. Therefore, it is possible to kill up to three unshielded opponents in a single burst if they are grouped close enough to each other, though this is an uncommon occurrence. Right after you shoot; however, it is possible to only shoot one round rather than three bullets, with a melee attack to disrupt the burst.

Disadvantages
At longer ranges, it's necessary to minimize strafing movements when firing to avoid "splintering" the shot grouping too much. Since each "shot" is really a three-round-burst, certain movements can break up your shot's grouping and greatly reduce accuracy. At far ranges, it would be more effective to attempt to spit on the enemy. Instead, to avoid this, either swap it in for the Covenant version (Covenant Carbine), or get up to medium range. The Carbine has the same degree of firepower, and it lacks the splitting effect. This also affects accuracy when firing from a moving vehicle such as a Warthog (especially when firing at a 90-degree angle from the vehicle's heading).

The Battle Rifle is not as effective at long ranges. Each bullet also acts as a tracer which gives away the shooter's position. Also, the range is limited compared to the Sniper Rifle. It is also not effective against Sentinels, and does negligible damage against vehicles.

The BR55 can have a certain disadvantage against Flood combat forms, in particular the Human variant. Both forms have a certain vulnerable spot on their bodies. This is the area of the body that the Infection Form has taken home in. For the Sangheili variant, this is the upper-center of the chest. The Human variant takes hold in the left shoulder area, noted by a large bump. The Combat Form can be brought down with a single shot by hitting this area, but the Battle Rifle is virtually useless shooting anywhere else.

Physical Description and Appearance
The BR55 is a bullpup, fires a 3 round burst (fully automatic on Harvest), UNSC rifle that fires the 9.5x40mm X-HP-SAP round (see below). It fires a three round burst from a 36 round magazine which fits flush in the receiver. The magazine housing is built directly into the underside of the stock of the gun and is located behind the grip (known as a bullpup configuration).

This titanium alloy weapon is gas-operated with a rotating bolt and therefore must be cocked before the first round can be fired. The charging handle used to chamber the round is located on the left side of the weapon and does not move during operation. Once the first round is fired, the gases from that round and those to follow impinge upon a gas piston, which pushes back the bolt carrier, rotating the bolt inside and continuing to chamber rounds until the magazine is empty. Once the magazine is empty, the charging handle (even though not illustrated in-game) can either be pulled back and locked or, it can be fully cycled after a fresh magazine has been housed. If it is pulled back and locked, then it must be pushed forward once a fresh magazine is housed to chamber a new round. The magazine release button is located on both sides of the gun with an arrow pointing down towards the housed mag in the stock. The ejection port is located on the right side of the weapon. There is also a fire selector on both sides of the ammo display.

The BR55, having a rifled barrel, is 89.9cm long and is fitted with a scope for increased accuracy. The scope is mounted on the optics rail. The safety is also located above the handle of the weapon.

The BR55 may be based on the French FAMAS assault rifle

Ammo
It is interesting to note the ammo used for the Battle Rifle. It uses a new 9.5mm x 40 Experimental Round. The 7.62 x 51 mm NATO round is a rather high-powered round used on the MA5B and on modern-day marksman rifles and machine guns. The 7.62 mm already has a history of having too much recoil because of the rounds high power, which made it hard to fire fully-automatically in assault rifles. While the BR55's larger 9.5 mm round would be heavier and would thus presumably generate even more, recoil than the 7.62 mm NATO, this is not necessarily the case. Since the Battle Rifle's rounds have a noticeably shorter case length than the 7.62 mm NATO (40 mm vs. 51 mm), they most likely contain much less powder than the 7.62 mm NATO, which would yield less muzzle energy and thus less recoil, making the weapon more manageable.

However, the size of the ammo would have a problem fitting in the 36-round magazine of the current Battle Rifle. If a Heckler Koch G3 (which is chambered in 7.62mm x 51) has a standard magazine count of 20 and be the size that it is, it would be hard to see a cartridge much wider than the 7.62mm fit inside of a magazine of the Battle Rifle's size and with a capacity of 36 rounds. The Battle Rifle's magazine would have to be about twice as long as it actually is to hold that many rounds. This is a continuous pattern with UNSC assault rifles as a similar instance occurred with the MA5B. The MA5B has a magazine of 60 rounds chambered in the 7.62mm x 51 with a rather "small" magazine size, which looks to be smaller, than the Battle Rifle's magazine.

Grunts
Grunts are slow, clumsy, and lack any form of shielding. They cannot breathe oxygen so they must breathe methane gas from the tanks on their backs. With a single headshot it is possible to kill up to three Grunts in one burst (though very unlikely). Shooting the methane tank is mildly effective. If a headshot is difficult for the player to accomplish, one or two three-round bursts, followed by a melee can also be effective. However on easy difficulty provided that all bullets hit grunts can usually be killed with one burst. They are only combat effective if they are veterans (clad in silver armor, or are led by a Brute or Elite). However, for larger groups, it is advisable to switch to the SMG or Plasma Rifle for the automatic fire effect.

Jackals
Not as effective against Jackals as Grunts, as the bullets bounce straight off a Jackal's Energy Shield. When confronted by a Jackal with its shield in defense position, fire a well-placed shot through the small notch, and, as the Jackal recoils from the wound, finish it off with a head shot. Also, in close-quarters combat, it is recommended to first melee the Jackal, and then finish it off with a head shot when it recoils from the blow. If playing multiplayer co-op have one person distract it while the other moves around back and shoots it from there. Never aim for the body, as it will take 3-5 body-shots, in which duration leaves you vulnerable to other fire. One headshot will suffice. Note: Jackal shields only cover the front of the Jackal.

Jackal Snipers
At medium range, the rifle is an effective anti-sniper weapon, giving suppressive or covering fire. Since sniper Jackals do not use shields, they can be easily dispatched with a well-placed head shot or a couple shots to the body. As always, it is important to always use proper cover when engaging a Jackal sniper. Be careful you don't get sniped if you are forced to stand in the open, though, and be sure the Jackal doesn't recover and fire off a shot. This is extremely important for Legendary battles, as a single shot anywhere will put you down for good.

Elites
The Elite's energy shield is a great defense to the Battle Rifle. On Normal difficulty, a basic Minor Elite takes four full bursts to the head to kill, while Major Elites take six and Zealots take 12. However, unshielded Elites of any rank will die from a single head shot. Try to keep the rifle leveled at its head, and keep firing till it falls dead. It is advisable to soften an Elite up with grenades, melee attacks, or a Plasma Pistol's charged shot before engaging them with a Battle Rifle, especially on higher difficulties. Another tactic is to use the button combination "BXR" on the lower difficulties.

Brutes
You can kill a Brute with three head shots, as the first two bursts will knock off the helmet, then the following headshot will kill the Brute. However, shooting a Brute in the torso is not particularly effective due to their extreme resilience. The Covenant Carbine is more effective for the job.

Hunters
Dodge behind them, and fire as many bursts as possible into their back before they turn around. Be careful when fighting an enraged Hunter, as they can backhand you and kill you with a single strike. It can take quite a few bursts to kill a Hunter, however, especially on higher difficulty levels. It is not recommended for killing Hunters, a weapon such as the SMG or even better yet a Sniper Rifle is more suited for this job.

Drones
The Battle Rifle is actually quite effective against Drones. It only takes two to three bursts to kill them, even on Legendary in Halo 3. The Drones are not as agile as many people presume and can be hit quite easily with a steady aim. Also, when they land, they will not instantly take off if hit, so you have time to hit it again and kill it. While not the best weapon to take down Drones, it can effectively deal with smaller swarms. An SMG or Assault Rifle is much more suited to killing drones due to their extremely high rate of fire.

Tactics for Flood
When fighting singular to hordes of Combat Forms, aim for the Infection Form in their chest or "heart" to kill it in a single shot (This works in any Halo game, however it is difficult in Halo 1 because of the lack of the "Killzone Dot". In Halo 2 it seems to take a few shots to hit it.). This will leave the body intact and ready to be taken over again, so it is advisable to shoot off the arms when you have the opportunity. It is also possible, to kill a Combat Form by firing at the junction of the host's neck and the tentacles sprouting from it's chest. If a Combat Form you are shooting at has shields, it will take much more to kill it. The Battle Rifle, is also effective for killing Infection Forms and Carrier Forms. Against shielded Combat forms, though, always melee, jump back (to avoid the deadly blow from the combat form), and then fire into the chest.

All in all, in Halo 2, this weapon is poor against The Flood unless you hit the Infection Form (Which is rather finicky; sometimes it will hit, sometimes it won't, and it takes more than half a magazine in body shots on Easy difficulty to kill one human combat form), so the dual SMG combo or an Energy Sword is the most suitable for them.

Character Compatibility

 * Elites
 * Spartans
 * Cortana (only through modding)
 * Marines
 * Brutes (a glitch seen on the level Gravemind)
 * Jackals (can be given to them on Sacred Icon)
 * Flood Combat Form (Human)
 * Flood Combat Form (Elite)

Influence
The BR55 is largely based on the QBZ-95 Chinese-designed assault rifle. Introduced in 1995, the QBZ-95 represented a radical departure from previous Chinese infantry arms. The new rifle used a bullpup configuration and was chambered for the lighter 5.85x42mm round. Both the BR55 and the QBZ-95 also notably lack a fully automatic firing setting, but can similarly mount optional rifle accessories on the carrying handle. It also has some resemblance to the G36 and G36C.

Trivia

 * On the side of the Battle Rifle, (opposite side to the bolt) there are two Chinese symbols, "猴王". Some people have stated that it may mean "The Monkey King".
 * The evolved Battle Rifle variant in Halo 3 is called the BR55HB SR Battle Rifle.
 * The Battle Rifle was originally supposed to shoot single rounds in its zoomed mode in Halo 2 based on the Zanzibar play video before its release, it was later changed to fire the normal three-round bursts.
 * Although the new BR55HB SR rifle has largely replaced most BR55s, this older weapon may still have a place on the battlefield. Its shorter barrel would allow it to be used in confined spaces easier, almost like a carbine.
 * This weapon was first introduced in Eric Nylund's Halo: First Strike novel. It was noted that this rifle had "a longer barrel and stock, with a cut down muzzle shroud." "A scope was mounted on an optics railing along the top of the rifle." Spartan-043 (Will) once commented on the rifle, "Auto zoom, nice."
 * On the Level Quarantine Zone in Halo 2, the player can find a Battle Rifle from a dead UNSC Marine that, when reloaded, can have a total of 236 rounds of ammo total instead of the normal 108 spare rounds.
 * This weapon and the Plasma Pistol make the notorious Noob Combo. This was parodied in Another Day at the Beach. The "noob" combo is usually despised in Halo multiplayer matches and will get the "noob" a lot of insults
 * When the first prototype came out in 2525 it had 60 rounds per magazine.
 * In the Halo 2 E3 Demo, the Battle Rifle was the only weapon shown used in making a Melee Combo, originally meant to be in the Final Version but was scrapped.
 * In the Halo 2 E3 demo, the Battle Rifle was shown firing semi-automatically (single shots).
 * The American M16A2/A4 rifle fires a three-round burst somewhat comparable to the Halo universe's in-game BR.
 * The Battle Rifle does not appear in Halo CE.
 * The Battle Rifle is a good weapon for fighting Flood on Legendary, due to its high accuracy and relatively high power.
 * Battle rifles are good for killing Brutes. A single headshot is enough to finish off an unarmored Brute.
 * It seems to be preferred weapon on Red vs Blue after they began to use Halo 2.
 * The maximum ammo that can be carried for a Battle Rifle is 144, including the ammo inside the magazine.
 * The BR55 has been brought out in the form of a scaled replica for extreme fans. They usually sell for about $20 US.
 * In Halo: Custom Edition, it is popular to mount the Battle Rifle with a grenade launcher.
 * The BR55 is the only weapon (along with the SMG and the M247 General Purpose Machine Gun) that the UNSC use on the E3 2004 Demo.
 * If the rifle is aimed directly at a head,(for a head shot),the cross hair will have a red dot in the center.
 * Four headshots will kill an enemy in Halo multiplayer.
 * Much like the MA5B and the MA5C, The BR55 and its newer variant, the HB SR, has a screen with the number of rounds left in the magazine shown in bright blue text. A compass is absent from the screen, however.
 * The Battle rifle was first seen in Halo 2
 * The battle rifle wasn't in Halo CE
 * The Battle rifle cam back to Halo 3 with it's counterpart, the Assault rifle.

Related Articles

 * BR55HB SR Battle Rifle (Replaces the BR55 for Halo 3)
 * SMG (The weapon partnered with the BR55 to replace the Assault Rifle)
 * MA5B Assault Rifle (The weapon in Halo: CE, which was replaced by the BR55 and SMG)
 * Covenant Carbine (The Covenant counterpart of the BR55)
 * MA5C Individual Combat Weapon System