XM-177E2

NOTE: This article is about the XM-177E2 carbine featured in ArmA: CWA. For the XM177 and its derivatives in ArmA 3's S.O.G. Prairie Fire Creator DLC, see XM177 (S.O.G.).

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The newer XM-177E2 is a notable improvement over its predecessor the E1, although still hampered by having a loud muzzle blast and a bright muzzle flash. Even with these two faults, however, it is a lightweight, compact, hard-hitting weapon that was used extensively by Special Forces troops throughout the Vietnam War.

Weapon Description^[1]

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The XM-177E2 is a 5.56 mm carbine used exclusively by U.S. military forces in ArmA: Cold War Assault.

Overview[]

The XM-177E2 is a gas operated, selective fire carbine that is chambered to fire the 5.56×45 mm NATO round.

It loads from 30-round magazines^{[CfgWp 6]}, and can attain a fire rate of up to ~ 857 rounds per minute^{[CfgWp 7]}^{[Formula 1]} on semi-auto or 600 RPM^{[CfgWp 8]}^{[Formula 2]} on full auto. It has a muzzle velocity of 900 m/s.^{[CfgWp 9]}

A common sight amongst U.S. military vehicle crews and helicopter pilots, the XM-177E2 is essentially a carbine variant of the full-length M16A2 rifle used by regular troops. As with the M16A2, the XM-177E2 also has the ability to launch rifle grenades from its muzzle.^{[CfgWp 6]}

However, unlike the M16A2 the primary difference with the XM-177E2 is that it is capable of firing on full auto as opposed to being restricted to a three-round burst, rendering it far more effective in close quarters.^{[CfgWp 10]}

Its main drawback is its muzzle flash, which is notoriously much larger than that of the M16A2's and can obstruct the shooter's sight when firing, especially under low-light conditions. Unless it is absolutely necessary to do so, firing in short 1-2 round bursts will help to minimise the drawbacks of its excessive flash.

Variants[]

XM-177S[]

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XMS Rifle variant with optics

Weapon Description^[2]

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The XM-177S is simply an XM-177E2 carbine that has been fitted with a reflex sight mounted onto the carryhandle.

Unlike the baseline XM-177E2, it is the exclusive weapon of U.S. black ops teams. The reflex sight makes aiming at distant targets easier since they are offer a (slightly) better field-of-view.^{[CfgWp 15]}^{[CfgWp 16]} In all other aspects, it is completely identical to its parent counterpart in every way.

Sights[]

Ironsights on the XM-177E2's carryhandle are set to a fixed zeroing of 400 metres.^{[CfgWp 17]}^{[CfgWp 18]} This cannot be manually adjusted.

The reflex sight used by the XM-177S uses a fixed zeroing of 400 metres.^{[CfgWp 19]}^{[CfgWp 20]} It is not possible to manually adjust this to a different setting.

Recoil curves[]

Semi-automatic

 
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Charts/graphs are not available on mobile. Please switch to desktop mode in order to see them.

Full auto

 
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Charts/graphs are not available on mobile. Please switch to desktop mode in order to see them.

Ammunition[]

Ammo parameter	5.56 mm NATO (Ball)
Base damage value	9 ^{[CfgAm 1]}^{[CfgAm 2]}
Spill damage value	2 ^{[CfgAm 3]}^{[CfgAm 4]}
Muzzle velocity (m/s)	900^{[CfgWp 9]}

For rifle grenades usable with the XM-177E2, refer to its dedicated article here.

Both variants of the XM-177E2 only support loading one type of magazine.^{[CfgWp 6]} It requires at least one^{[CfgWp 21]} free inventory slot to carry:

XM-177E2 Mag.[]

30-round magazine loaded with 5.56 mm ball ammunition.^{[CfgWp 22]}^{[CfgWp 23]}

Its bullets have a spill radius of 0.1 metres upon impact.^{[CfgAm 5]}^{[CfgAm 6]}

Trivia[]

In prior versions of Cold War Assault when it was previously released under its original title as Operation Flashpoint: Cold War Crisis, the XM-177S was not actually available at launch and was only added with Patch 1.30.^[2]^[3]

Gallery[]

Config/script references[]

CfgAmmo

↑ CfgAmmo >> BulletSingleW >> hit
↑ CfgAmmo >> BulletFullAutoW >> hit
↑ CfgAmmo >> BulletSingleW >> indirectHit
↑ CfgAmmo >> BulletFullAutoW >> indirectHit
↑ CfgAmmo >> BulletSingleW >> indirectHitRange
↑ CfgAmmo >> BulletFullAutoW >> indirectHitRange

CfgWeapons

↑ ^1.0 ^1.1 CfgWeapons >> M4 >> count
↑ CfgWeapons >> M4 >> Single >> dispersion
↑ CfgWeapons >> M4 >> FullAuto >> dispersion
↑ CfgWeapons >> M4 >> Single >> recoil
↑ CfgWeapons >> M4 >> FullAuto >> recoil
↑ ^6.0 ^6.1 ^6.2 CfgWeapons >> M4 >> magazines[] >> {"M4","Mortar"}
↑ CfgWeapons >> M4 >> FullAuto >> reloadTime
↑ CfgWeapons >> M4 >> FullAuto >> reloadTime
↑ ^9.0 ^9.1 CfgWeapons >> M4 >> initSpeed
↑ CfgWeapons >> M4 >> modes[] >> {"Single","FullAuto"}
↑ CfgWeapons >> XMS >> Single >> dispersion
↑ CfgWeapons >> XMS >> FullAuto >> dispersion
↑ CfgWeapons >> XMS >> Single >> recoil
↑ CfgWeapons >> XMS >> FullAuto >> recoil
↑ CfgWeapons >> XMS >> opticsZoomMin
↑ CfgWeapons >> XMS >> opticsZoomMax
↑ CfgWeapons >> M4 >> distanceZoomMin
↑ CfgWeapons >> M4 >> distanceZoomMax
↑ CfgWeapons >> XMS >> distanceZoomMin
↑ CfgWeapons >> XMS >> distanceZoomMax
↑ CfgWeapons >> M4 >> magazineType >> "256"
↑ CfgWeapons >> M4 >> Single >> ammo >> "BulletSingleW"
↑ CfgWeapons >> M4 >> FullAuto >> ammo >> "BulletFullAutoW"

Formulae

↑ 60 / reloadTime = 60 / 0.07
↑ 60 / reloadTime = 60 / 0.1

References[]

↑ Bohemia Interactive a.s., The Codemasters Software Company Limited 2001, XM-177E2 commando, flashpoint1985.com, viewed 5 March 2025, <https://web.archive.org/web/20020803142541/http://www.flashpoint1985.com/gear/west/xm/xm.html>. (archived link)
↑ ^2.0 ^2.1 Bohemia Interactive a.s., The Codemasters Software Company Limited 2001, Operation Flashpoint - Download - GEAR, flashpoint1985.com, viewed 8 June 2024, <http://web.archive.org/web/20020214204218/http://www.flashpoint1985.com/download/gear_weaponp1.html#anchor>. (archived link)
↑ Mcnicoll, J et al. 2006, Operation Flashpoint: Version History, Bohemia Interactive Community Wiki, viewed 3 March 2023, <https://community.bistudio.com/wiki/Operation_Flashpoint:_Version_History#Patch_v1.30>.

External links[]

Wikipedia: CAR-15 Commando (XM177/GAU-5 series)

Weapons of ArmA: Cold War Assault
Handguns	92F 9 mm • CZ-75 9 mm • Glock 17 9 mm • S&W .357 • Tokarev TT-33 7.62 mm
Submachine guns	Ingram .45 • MP5SD3 9 mm • PP-19 Bizon 9 mm • Sa-61 Scorpion 7.65 mm • UZI 9 mm
Shotguns	Kozlice
Carbines	AK-74 SU 5.45 mm • XM-177E2 5.56 mm (XM-177S)
Assault rifles	AK-47 7.62 mm (AK-47 GL, AK-47 CZ) • AK-74 5.45 mm (AK-74 GL) • AUG A1 5.56 mm • FN-FAL 7.62 mm • G3A4 7.62 mm • G36 5.56 mm • M16A2 5.56 mm (M16A2 GL)
Sniper rifles	Hunting Rifle 7.62 mm • M21 7.62 mm • SVD 7.62 mm
Machineguns	M60 7.62 mm • PK 7.62 mm
Grenade launchers	6G30 • MM-1
Launchers	9K32 Strela-2 • AT-4 Spigot • Carl Gustav M2 • FIM-92 Stinger • M72 LAW • RPG-75NH
Static	M2
(Parenthesis) denote variants.

United States - Armoury (ArmA: Cold War Assault)
Handguns	92F 9 mm • Glock 17 9 mm • S&W .357
Submachine guns	MP5SD3 9 mm • UZI 9 mm
Carbines	XM-177E2 5.56 mm (XM-177S)
Assault rifles	AUG A1 5.56 mm • G36 5.56 mm • M16A2 5.56 mm (M16A2 GL)
Sniper rifles	M21 7.62 mm
Machineguns	M60 7.62 mm
Grenade launchers	MM-1
Launchers	Carl Gustav M2 • FIM-92 Stinger • M72 LAW
Static	M2
(Parenthesis) denote variants.