Image credit
- Title
- File:AK-104 assault rifle at Engineering Technologies 2012.jpg
- Author
- Mike1979 Russia(attribution required)
- Licence
- CC BY-SA 3.0
- Source
- https://commons.wikimedia.org/wiki/File:AK-104_assault_rifle_at_Engineering_Technologies_2012.jpg
How Muzzle energy is calculated
E = ½ · m · v²
Inputs
- m8 g123.5 grverifiedsourceBallistics table of the cited article.
- v738 m/s2,421 fpsverifiedMeasured with a 520 mm barrel, not this arm's 314 mm. Velocity outside the sourced range is not projected.
1 of 2 inputs link to their source.
How Muzzle velocity is calculated
nearest sourced barrel length, no extrapolation
Inputs
- v at 520 mm738 m/s2,421 fpsverifiedsourceBallistics table of the cited article.
Assumptions
- This figure belongs to a 520 mm barrel. It is shown because it is the closest measurement that exists, not because it applies here.
1 of 1 inputs link to their source.
How Loaded mass is calculated
m_loaded = m_empty + m_magazine + n · m_cartridge
Not calculated: m_magazine has no sourced figure yet. Nothing is substituted for a missing input.
Assumptions
- One magazine, filled to the stated capacity. Spare magazines, optics, slings and lights are the owner’s, not the arm’s.
2 of 4 inputs link to their source.
How Free recoil is calculated
E_recoil = ½ · m_firearm · v_recoil²
Inputs
- m_firearm3 kg6.614 lbestimatedsourceEmpty, from the infobox; no inline citation is given there. The infobox also gives 3.2 kg with an empty magazine and 3.7 kg with a loaded magazine.
- v_recoil1.968 m/s6.457 fpsestimated
Assumptions
- Propellant gas momentum is excluded: ARMAG does not record charge weights. This is therefore a lower bound on the real free recoil, consistent between entries but smaller than a figure that includes the gas term.
- Free recoil: the arm is unrestrained. Stock design, muzzle devices, stance and shooter mass are not modelled, because none of them is a property of the arm.
1 of 2 inputs link to their source.
How Capacity is calculated
as published for the primary chambering
Inputs
- capacity30estimatedsource30-round detachable box magazine, from the infobox, uncited there.
1 of 1 inputs link to their source.
Derived figures
Computed from the sourced values above. Open ƒ on any figure for the formula, its inputs, and the assumptions it makes.
How Momentum is calculated
p = m · v
Inputs
- m8 g123.5 grverifiedsourceBallistics table of the cited article.
- v738 m/s2,421 fpsverifiedMeasured with a 520 mm barrel, not this arm's 314 mm. Velocity outside the sourced range is not projected.
1 of 2 inputs link to their source.
How Sectional density is calculated
SD = mass(gr) / (7000 · diameter(in)²)
Inputs
- mass8 g123.5 grverifiedsourceBallistics table of the cited article.
- diameter7.92 mm0.3118 inverifiedsourceCartridge maximum, dimension G1.
Assumptions
- Reported in the conventional lb/in² so it is directly comparable with published figures.
2 of 2 inputs link to their source.
How Power factor is calculated
PF = mass(gr) · velocity(fps) / 1000
Inputs
- mass8 g123.5 grverifiedsourceBallistics table of the cited article.
- velocity738 m/s2,421 fpsverifiedMeasured with a 520 mm barrel, not this arm's 314 mm. Velocity outside the sourced range is not projected.
Assumptions
- A competition classification defined by the IPSC and USPSA rulebooks, stated in their units. It describes a scoring category, not an effect.
1 of 2 inputs link to their source.
How Magazine dump is calculated
t = (n − 1) / (rpm / 60)
Inputs
- n30estimatedsource30-round detachable box magazine, from the infobox, uncited there.
- rpm600 rpmestimatedsourceFrom the infobox, uncited there.
Assumptions
- Cyclic rate held for the whole magazine, no stoppages, trigger held down. A theoretical figure for comparing mechanisms, not a measured one.
2 of 2 inputs link to their source.
How Sight error at 1 mm is calculated
θ = atan(misalignment / sight radius)
Not calculated: sight radius has no sourced figure yet. Nothing is substituted for a missing input.
Assumptions
- Shows what a stated aiming error costs. The misalignment is the reader’s figure; the site does not claim how well anyone aims.
No input on this calculation carries a clickable source yet.
Specifications
Every row here is generated from the schema, so a figure recorded on this entry cannot be missing from the table, and the same rows, read the same way, are what the comparison shows.
Identity
- Type
- Carbine
- Action
- Self-loading
- Fire modes
- Semi-automatic
- Fully automatic
- Operating system
- Gas, long-stroke piston
- Designed in
- Russia
- Produced in
- Introduced
- 1994
- Production
- not recorded
Dimensions and mass
- Mass, empty
Empty, from the infobox; no inline citation is given there. The infobox also gives 3.2 kg with an empty magazine and 3.7 kg with a loaded magazine.
- Magazine, empty
- not recorded
- Length
Stock extended, from the infobox, uncited there.
- Length, folded
Stock folded, from the infobox, uncited there.
- Width
- not recorded
- Height
- not recorded
- Barrel length
From the infobox, uncited there.
Sights and rifling
- Sight radius
- not recorded
- Sight height over bore
- not recorded
- Rifling twist
- not recorded
- Twist direction
- not recorded
- Grooves
- not recorded
- Sight graduation
- not recorded
Chamberings
- 7.62x39mmprimary30 rounds
Scale
A to-scale outline against family siblings. The dimensions are sourced; the shape is a representative outline for the type, and says so.
- AK-104824 mm32.44 inheight not recorded
Representative outline: the dimensions are sourced, the shape is not. Overall length, and barrel length where recorded, are drawn from this entry's own figures; the profile is a generic one for the firearm type and says nothing about this arm's actual contours. AK-104 records no height, so its outline is drawn at the type's proportion. That height is part of the shape, not a measurement.
Detail
The AK-104 is a short-barrelled carbine version of the AK-103 rifle, one of the AK-100 family Mikhail Kalashnikov designed in 1994. It is chambered in 7.62×39mm, the cartridge of the original AK-47 and AKM, and feeds from any standard 7.62×39mm AK-pattern magazine.
Its 314 mm barrel is common to the other carbines of the series, the AK-102 and AK-105. Unlike the shorter, skeleton-stocked AKS-74U it has a solid, side-folding polymer stock, though it keeps a muzzle booster derived from the AKS-74U’s. Documented users include Russia’s Federal Protective Service, Syrian special mission forces and Thailand’s Directorate of Logistics.
No figure on this page carries an inline citation in Wikipedia’s infobox, so mass, length, barrel length, cyclic rate and effective range are all recorded as estimated rather than verified, and no manufacturer specification sheet was reachable to improve on that; the manufacturer’s own page cited by the infobox for the weapon’s service date is no longer reachable either. No published twist rate was found for this entry.
References
This entry's own bibliography. Every citation key on this page resolves into this list.
- AK-104 · Wikipedia · 1373702734 · read 2026-09-24 · CC BY-SA 4.0
Last verified 2026-09-24 · review status: draft