The M4 is a standard issue carbine for the United States Army. It features a semi-automatic and 3-round burst firing mode. The M4A1 is the fully automatic variant of the M4 carbine, which in itself is a shortened version of the M16A2.
|Drop start||10 "110"|
|Drop shift||450 "80"|
|Drop end||10000 "46"|
The M4A1 is a select-fire carbine featured in Insurgency: Nightfall. It was introduced to the Security forces to balance out the AK-74 on the Insurgent faction. When compared to other AR-15 variants, the M4A1 has the same recoil patterns with the Mk18, but a slightly longer barrel. However, the M4A1 is able to mount a M203 grenade launcher, unlike the Mk18.
The M4 was one of the Security faction's carbines during "Insurgency - Early Access". Being able to fire in semi-automatic and automatic, it shared a similar role to the Mk18 . The appearance of the M4 was strikingly close to that of the M16A4 , featuring flip-up iron sights and a shortened barrel. Contrary to its given name in game, the M4 that was in the game was actually a M4A1
The M4 was eventually removed from the game, due to the role of the M4 being too similar to that of the Mk18, but it was brought back with the Insurgency: Nightfall update. However, with a different model this time.
- The fire selector is permanently set to the safe position on the weapon model, and does not change when switching fire mode, the fire selector simply rotates back to the safe position when switching fire modes.
- The M4A1 and M16A4 share the same carry-handle model and texture.
- When using red dot sights and holographic sights, the sight picture will be slightly misaligned to the left of the front sight post.
- Since the M4A1 was not available until the Nightfall update, most people downloaded carry-handles to the Mk18 so it could be the M4A1.
|Weapons of Insurgency|
|Security Forces||Insurgent Forces|
|Submachine guns||MP5K • UMP-45||MP40 • Sterling|
|Carbines||AC-556 • Mk18 • M4A1||M1 Carbine • SKS • AKS-74U|
|Assault rifles||M16A4 • Galil SAR||AKM • AK-74 • Galil|
|Battle rifles||L1A1 SLR • M14 EBR||FAL|
|Light machine guns||M249||RPK|
|Handguns||Makarov • M45A1 • M9||Makarov • Model 10 • M1911|