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Submachine Gun (Half-Life 2)

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This article is about the retail MP7. For the cut MP7, see MP7 (cut weapon).

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SMG HL2.jpg
Submachine Gun
Production information



Submachine gun

Technical specifications
  • 4/bullet (5 in HL2DM)
  • 100/grenade (if direct hit)
  • 45 rounds
Max ammo
  • 270 rounds
  • 3 rifle grenades


Ammo type

Gas-operated, short stroke piston, rotating bolt

Rate of fire





Medium to high

Projectile speed





Short to medium

Used by
Game information
  • weapon_smg1
    (weapon entity)
  • item_ammo_smg1
    (ammo entity)
  • item_ammo_smg1_large
    (ammo entity)
  • item_ammo_smg1_grenade
    (grenade ammo entity)
  • grenade_ar2
    (grenade projectile entity)

Ted Backman[1]

The Submachine Gun, also known as SMG1, is a compact, fully automatic firearm used by the Combine and the Resistance.


Rebels aiming at the Gunship with their SMGs during the attack on New Little Odessa.
  • The SMG's appearance and function resembles that of the real world MP7, the difference being a secondary, lower barrel serving as a grenade launcher.
  • It has two fire modes; primary fire is fully automatic, with a high rate of fire, but poor accuracy, while the secondary fire launches a contact grenade.
  • In Half-Life 2, Freeman can first acquire ammo for the grenade launcher in the chapter Route Kanal as part of a secret cache under the steam pipes next to a Lambda logo. In Episode One it can be found in one of the Supply Crates before the Combine Supply room. In Episode Two it is located in a cache in the chapter This Vortal Coil along with the SMG itself.


Overwatch Soldier being killed with the Scout Car while his SMG flies towards Gordon.
  • Because of the SMG's poor accuracy at medium to long range, it should be used mostly at short range. While it can kill an enemy at medium range, it will usually take about a full magazine or so to kill one enemy, which is a waste of ammo (although this is counterbalanced with the often abundant supply of SMG ammo lying around, especially in urban areas).
  • The SMG's primary fire is very useful if combined with the built-in grenade launcher. Enemies that are wounded by the launcher can be easily finished off via the primary fire, even if the target is at medium to long range.
  • Since fully automatic fire depletes ammunition quickly, ammo count should be closely watched.
  • The secondary fire grenades are excellent for hitting targets that are behind cover or large groups of targets. Most humanoid enemies will die in one shot if they are either hit directly by the grenade or are very close to the point of impact.
  • Grenades can do damage to enemies that are only harmed by explosives, such as Striders and Combine Gunships. This can be useful when one believes that an enemy is almost dead, but does not want to run back and grab more rounds for the RPG.
  • The SMG grenades themselves are rare and therefore should generally be used as a last resort or against a close group of enemies. Care should be taken to avoid self-inflicted damage, which can be dangerous if a grenade detonates too close. Since the grenades have no time-delay fuse that would prevent premature explosions, there is a high risk of self-damage if enemies or allies move into the grenade's arc before one can react.
  • Noriko equipped the Scout Car with an ammunition box at its rear, holding unlimited SMG ammo.

Behind the scenes[edit]

The SMG2's viewmodel.
  • The Submachine Gun is inspired by the real-world MP7 by Heckler & Koch. In early versions of Half-Life 2, there were two submachine guns in the game; the SMG1, which was based on the real-world MP5K, and the SMG2, which was also based on the real-world MP7 (and was somewhat more closely based on the real gun than the final SMG is). The SMG1 had a 30 round magazine, a lower rate of fire and better accuracy, while the SMG2 had a larger magazine, a higher rate of fire, and poorer accuracy. At some point before the E3 2003 presentation, the MP5K-based SMG1 was dropped in favor of the final SMG.
  • The SMG's grenade launcher function was originally intended to be a feature of the OICW, but when the OICW was cut in favor of the OSIPR, the grenade launcher feature was "transplanted" onto the SMG, presumably for balance purposes and to make the SMG more useful.
  • In one of Half-Life 2 trailers, SMG has 60-round magazine instead of 45-round.[2]


  • When the weapon is reloaded, the magazine is never ejected; Freeman's hand just slaps the bottom of the gun.
  • Even though many Rebels and Overwatch Soldiers use the SMG, Freeman is the only one who ever uses the grenade launcher.
  • The SMG in Episode One uses the leak MP7's base textures, but the other textures (such as the normal map) are based on that of the final.
  • In the original version of Half-Life 2, the SMG used to fire faster. When Episode Two was released, the SMG rate of fire was slightly lowered; this change was implemented in the 2010 versions of Half-Life 2 and Episode One.


List of appearances[edit]

Submachine Gun (Half-Life 2)
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Main games[edit]