|Unlocked at||Rank Level 1|
|Magazine Size||20-30 (Singleplayer), 30|
|Maximum Ammunition||80 rounds (Singleplayer)|
|Used by||United States Armed Forces|
Korean People's Army
- "The main assault rifle for the U.S. Armed Forces. High rate-of-fire and low recoil make it a balanced choice for outdoor and close-quarters combat."
- — In-game description.
The M4 is main assault rifle of the Korean People's Army and the United States Armed Forces.It is encountered in every mission, except Overwatch. Unlike it's multiplayer version, it can be found in both 20 and 30 round configurations.
In multiplayer, the M4 is unlocked by default, with moderate damage, high rate of fire, excellent accuracy, high range, quick reload speed, and a large ammo count. The M4 can be painted with any of the Camouflage Patterns and allows for the use of every attachment possible, excluding the Sniper Scope.
The M4 is meant to be the benchmark all-rounder for the game. The high rate of fire means it can burn through all of its ammo quickly without hitting a thing, but with proper trigger discipline and aim it can be incredibly effective.
Homefront: The RevolutionEditThe M4 was seen in the E3 reveal of Homefront The Revolution. It was found hidden in a vent along with a RC car. It was seen using a Red Dot Sight and a foregrip during the assault on the KPA Jail and was seen later being converted to an Ares Shrike 5.56.
- Both Hopper Lee and Connor Morgan use the M4 as their main weapon of choice.
- The name "M4 Rifle" is inaccurate in two regards as the M4 series are carbines rather than full length rifles, and all the "M4 Rifle"s are shown to be fully automatic, making them M4A1's, genuine M4's are burst-fire only.
- There is a possibility that the M4 rifles used by the KPA may not be actual American made M4A1's but, the Chinese made version, the Norinco CQ Type A since they already bought Chinese military weapons such as the T3AK (QBZ-03) (as well as other armaments like T-99 tanks and Z-10 helicopters). And knowing the tensions that existed between the two countries before the war, it is unlikely that the US government would have agreed to supply the GKR with large quantities of American weapons of any kind.
- The idea that the M4's seen in game are CQ Type A's is unlikely as all M4 rifles have "Blue4" meaning Blue Forces or United States Army marked on their receivers. However, since most of the enemy soldiers the player faces throughout the game are light infantry and police troops tasked with pacifying the conquered territories, their weapons could be captured American weapons re-issued to the rear guard while CQ Type A's are reserved for front-line troops and elite units like the 718 Division.
- Unlike Homefront, the M4 in Homefront The Revolution does not lose its front iron sight and gas block when an optic is attached.
- Strangely, all but two singleplayer M4's have 20 round magazine capacities, despite the magazines looking identical to standard 30 round STANAG magazines. One is an M4 located in a Resistance armory, and another located on the Golden Gate Bridge, on a crate behind two sentry gun towers.