Image credit
- Title
- File:AK-9 Assault rifle.jpg
- Author
- Macaque123(attribution required)
- Licence
- CC BY-SA 4.0
- Source
- https://commons.wikimedia.org/wiki/File:AK-9_Assault_rifle.jpg
How Muzzle energy is calculated
E = ½ · m · v²
Inputs
- m16.1 g248.5 grverifiedsource16.1 g as published in the article's ballistics table, which declares SI units.
- v290 m/s951.4 fpsverifiedMeasured with a 266.7 mm barrel, not this arm's 200 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 (SPEC.md §8.2)
Inputs
- v at 266.7 mm290 m/s951.4 fpsverifiedsource290 m/s as published, which is below the speed of sound at sea level by design.
Assumptions
- This figure belongs to a 266.7 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.
No input on this calculation carries a clickable source yet.
How Free recoil is calculated
E_recoil = ½ · m_firearm · v_recoil²
Inputs
- m_firearm3.1 kg6.834 lbestimatedWikipedia's infobox states 3.8 kg empty with no inline citation of its own; the archived Russian enthusiast site armoury-online.ru gives 3.1 kg without the suppressor and 3.8 kg with it fitted, which resolves the discrepancy, but neither is a manufacturer source.
- v_recoil1.506 m/s4.941 fpsestimated
Assumptions
- Propellant gas momentum is excluded: ARMAG does not record charge weights (SPEC.md §14). 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.
No input on this calculation carries a clickable source yet.
How Capacity is calculated
as published for the primary chambering
Inputs
- capacity20estimatedWikipedia's infobox figure, no inline citation of its own.
No input on this calculation carries a clickable source yet.
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
- m16.1 g248.5 grverifiedsource16.1 g as published in the article's ballistics table, which declares SI units.
- v290 m/s951.4 fpsverifiedMeasured with a 266.7 mm barrel, not this arm's 200 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
- mass16.1 g248.5 grverifiedsource16.1 g as published in the article's ballistics table, which declares SI units.
- diameter9.27 mm0.3650 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
- mass16.1 g248.5 grverifiedsource16.1 g as published in the article's ballistics table, which declares SI units.
- velocity290 m/s951.4 fpsverifiedMeasured with a 266.7 mm barrel, not this arm's 200 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)
Not calculated: rpm has no sourced figure yet. Nothing is substituted for a missing input.
Assumptions
- Cyclic rate held for the whole magazine, no stoppages, trigger held down. A theoretical figure for comparing mechanisms, not a measured one.
No input on this calculation carries a clickable source yet.
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, short-stroke piston
- Designed in
- Russia
- Produced in
- Introduced
- 2007
- Production
- not recorded
Dimensions and mass
- Mass, empty
- 3.1 kg6.834 lbestimated
Wikipedia's infobox states 3.8 kg empty with no inline citation of its own; the archived Russian enthusiast site armoury-online.ru gives 3.1 kg without the suppressor and 3.8 kg with it fitted, which resolves the discrepancy, but neither is a manufacturer source.
- Magazine, empty
- not recorded
- Length
- 705 mm27.76 inestimated
Stock extended, suppressor not fitted. Folded, the AK-9 is 465 mm; with the quick-detachable suppressor fitted it is 881 mm extended or 646 mm folded. Both Wikipedia's infobox and armoury-online.ru give matching figures, but neither is a manufacturer source.
- Length, folded
- not recorded
- Width
- not recorded
- Height
- not recorded
- Barrel length
- 200 mm7.874 inestimated
Matched by Wikipedia's infobox and armoury-online.ru; neither is a manufacturer source.
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
Operation
- Cyclic rate
- not recorded
Wikipedia's infobox states 700-750 rounds per minute with no inline citation; armoury-online.ru states 750-800. The ranges only partly overlap.
- Trigger pull
- not recorded
- Effective range
- not recorded
- Units produced
- not recorded
- Launch price
- not recorded
Chamberings
- 9x39mmprimary20 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-9705 mm27.76 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-9 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-9 is Izhmash’s answer to the AS Val and SR-3 Vikhr: a Kalashnikov-pattern carbine built around the same 9×39mm subsonic cartridge family, offering the SP-5 and SP-6 loads’ short-range, armour-piercing terminal performance with a quick-detachable suppressor rather than an integral one. Design work began in the early 2000s, reportedly at the Russian Interior Ministry’s request for a rifle combining Kalashnikov-pattern reliability and controls with the maneuverability of a dedicated suppressed carbine, and it is built on the AK-100 series’ action and furniture rather than a new design from the ground up. Alexei Dragunov, one of its designers, is quoted describing it as firing “virtually without a sound”, which is what the heavy subsonic 9×39mm bullet is for: it stays below the speed of sound, so a suppressor has no ballistic crack left to mask.
It entered limited service around 2007, gas-operated with a rotating bolt and select-fire, fed from a 20-round detachable magazine, and folds to a compact package with its suppressor removed. Despite that, it has seen far more limited issue than its established rivals the AS Val and SR-3M, staying a specialist tool for a few hundred units of Russian special and interior-ministry forces rather than a general-issue arm.
No manufacturer specification sheet for the AK-9 is published free online. Every figure in this entry comes from Wikipedia’s own infobox, which carries no inline citation for any of its dimensions, corroborated only by a Russian firearms-enthusiast site (armoury-online.ru) rather than by Izhmash directly — so mass, length, barrel length and magazine capacity are recorded as estimated rather than verified. The two sources’ cyclic-rate figures do not fully agree, so no single number is recorded for it. No sourced barrel length carries a stated test velocity, so no muzzle velocity is recorded either. Its single photograph, from Wikimedia Commons, is the only freely licensed image found across Commons, Smithsonian Open Access and DVIDS.
References
This entry's own bibliography. Every citation key on this page resolves into this list.
- AK-9 · Wikipedia · 1358735996 · read 2026-09-02 · CC BY-SA 4.0
- АК-9 автомат Калашникова - характеристики, ттх, фото · armoury-online.ru · read 2026-09-02
Last verified 2026-09-02 · review status: agent-populated