This subject is related to the Combine era.

SMG (Half-Life: Alyx)

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HLA SMG01.jpg
Production information





Sub-Machine Gun

Technical specifications


Ammo type

Power cells

Rate of fire





Short to medium

Used by
Game information


"Alyx! It's your lucky day! That Combine weapon's unbonded!"

The Combine SMG is one of three weapons wielded by Alyx Vance in Half-Life: Alyx.


The Combine SMG is a rapid-fire compact dark energy pulse weapon that can be easily wielded with one hand. Russell states that these weapons are “gene-encoded” to the user, however Alyx Vance is nevertheless able to obtain one that's not bonded. The weapon seems to be a smaller version of the Pulse Rifle and uses the same ammunition type and firing mechanism. When equipped with the extended magazine upgrade, it is also equipped with what looks like an energy ball launcher underneath the barrel, however it cannot be used by Alyx Vance. The weapon uses Dark Energy cells as ammunition, at first loaded by use of a magazine that holds the cell to be loaded, but when upgraded with the extended magazine they can be either manually loaded, or the cells can be first placed into the extended magazine - which is attached to the weapon - and then automatically loaded in order after the chambered cell has been emptied, much like the Pulse Rifle.

An alternate variant of this weapon appears to be the standard issue firearm of Combine Grunts. Its offensive capabilities are largely identical to that of the player's version, however it bears several cosmetic differences. By default it comes with an extended magazine without the energy orb launcher, an iron sight, and a much larger barrel shroud with a yellow canister attached to it. It also features a somewhat sleeker appearance, having most of the exposed firing mechanism seen on Alyx Vance's SMG covered by plating. Combine Grunts usually fire their weapon in short bursts with decent accuracy, with automatic fire only happening in scripted events or at point blank range.


The Combine SMG can be modified to include various attachments using a Combine Fabricator. Given below is a table containing upgrades, their description and Resin cost.[1]

Upgrade Description Resin Cost
Reflex Sight Adds a reflex sight to help with aiming and pinpoint weak spots of enemies 15
Laser Sight Adds a laser sight to help with aiming 25
Extended Magazine Allows the gun to store 4 cells in an extended magazine attached to the weapon, effectively increasing magazine capacity to 120 shots 30

Related Achievements[edit]

Half-Life: Alyx
Achievement Unbonded.jpg Unbonded
Collect the SMG.

Behind the scenes[edit]

Players who ordered the Valve Index in 2019 were given a set of bonus pre-order exclusive weapon skins in Half-Life: Alyx. The alternate skin for the SMG depicts it with a more blue metal and yellow painted highlights.


  • The case Alyx finds her SMG in has the word "proto" written in the bottom corner followed by some numbers. This suggests the pulse SMG could be a prototype, which is supported by its more exposed design compared to the sleek design of the Pulse Rifle wielded by the Combine Ordinals.


List of appearances[edit]