Image credit
- Title
- File:SR-3 right view.jpg
- Author
- Vitaly V. Kuzmin allow to use this picture in Copyright Policy(attribution required)
- Licence
- CC BY-SA 4.0
- Source
- https://commons.wikimedia.org/wiki/File:SR-3_right_view.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 156 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.
2 of 4 inputs link to their source.
How Free recoil is calculated
E_recoil = ½ · m_firearm · v_recoil²
Inputs
- m_firearm2.1 kg4.630 lbverifiedsourceTsNIITochMash's own exhibition placard, legible in this entry's hero photograph: 'Масса с магазином без патронов, кг: 2,1' — mass with an empty magazine fitted, 2.1 kg.
- v_recoil2.223 m/s7.294 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.
1 of 2 inputs link to their source.
How Capacity is calculated
as published for the primary chambering
Inputs
- capacity20verifiedsourceTsNIITochMash's own exhibition placard, legible in this entry's hero photograph: 'Емкость магазина, патронов: 20, 10' — 20- and 10-round magazines, shared with the AS Val and VSS Vintorez.
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
- 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 156 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 156 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
- n20verifiedsourceTsNIITochMash's own exhibition placard, legible in this entry's hero photograph: 'Емкость магазина, патронов: 20, 10' — 20- and 10-round magazines, shared with the AS Val and VSS Vintorez.
- rpm800 rpmestimatedWikipedia states a published range of 700-900 rounds per minute with no inline citation; midpoint recorded here.
Assumptions
- Cyclic rate held for the whole magazine, no stoppages, trigger held down. A theoretical figure for comparing mechanisms, not a measured one.
1 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
- 1995
- Production
- not recorded
Dimensions and mass
- Mass, empty
- 2.1 kg4.630 lbsource
TsNIITochMash's own exhibition placard, legible in this entry's hero photograph: 'Масса с магазином без патронов, кг: 2,1' — mass with an empty magazine fitted, 2.1 kg.
- Magazine, empty
- not recorded
- Length
- 640 mm25.20 insource
TsNIITochMash's own exhibition placard, legible in this entry's hero photograph: 'Габаритные размеры, мм: 640/395' — 640 mm with the stock extended, 395 mm folded.
- Length, folded
- not recorded
- Width
- not recorded
- Height
- not recorded
- Barrel length
- 156 mm6.142 inestimated
Wikipedia's infobox figure, no inline citation of its own; matched by military-today.com.
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
- 800 rpmestimated
Wikipedia states a published range of 700-900 rounds per minute with no inline citation; midpoint recorded here.
- 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.
- SR-3 Vikhr640 mm25.20 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. SR-3 Vikhr records no height, so its outline is drawn at the type's proportion — that height is part of the shape, not a measurement.
Lineage
This design
- Derived from AS Val
Gallery
Image credit
- Title
- File:SR-3 (539-12).jpg
- Author
- Vitaly V. Kuzmin(attribution required)
- Licence
- CC BY-SA 4.0
- Source
- https://commons.wikimedia.org/wiki/File:SR-3_(539-12).jpg
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Detail
The SR-3 Vikhr is a compact Russian carbine built around the same 9×39mm subsonic action as the AS Val, with the integral suppressor removed. TsNIITochMash designed it in the early 1990s for the FSB and Russian special operations forces, who wanted the Val’s short-range terminal performance — particularly its SP-6 armour-piercing load, developed to defeat body armour and steel plate at short range — in a package small enough to carry concealed. Dropping the suppressor let the barrel and receiver shrink well below the Val’s length, and the SR-3 adds a top-folding stock and a redesigned dual-slider charging handle worked with the thumb and forefinger, in place of the Val’s AK-style handle, so the weapon can be readied one-handed while held close to the body.
It is gas-operated with a long-stroke piston and the same rotating bolt group as the Val, firing from a closed bolt in semi-automatic or fully automatic modes selected by a cross-bolt button inside the trigger guard. High production cost kept it out of general Russian military issue; it went instead to the presidential guard, FSB officers and Spetsnaz units from 1995. The improved SR-3M adopted the Val’s side-folding stock and controls, a quick-detachable suppressor of its own, and a 30-round magazine that remains compatible with the original SR-3’s 10- and 20-round magazines and with the Val and VSS Vintorez.
Most of this entry’s figures come from a TsNIITochMash exhibition placard legible in its own hero photograph, giving the manufacturer’s stated mass with an empty magazine, overall length folded and extended, and magazine capacities — a rare case of primary-source data for a Russian arm reachable without a paywall. Barrel length and cyclic rate have no citation on Wikipedia beyond an unreferenced infobox figure, corroborated only by a similar secondary compilation, and are recorded as estimated for that reason. No sourced barrel length carries a stated test velocity, so no muzzle velocity is recorded. No image search of Wikimedia Commons, Smithsonian Open Access or DVIDS turned up a photograph of the improved SR-3M or SR-3MP variants, both of which are described in this entry’s prose but not shown.
References
This entry's own bibliography. Every citation key on this page resolves into this list.
- SR-3 Vikhr · Wikipedia · 1372463626 · read 2026-09-02 · CC BY-SA 4.0
- File:SR-3 right view.jpg (TsNIITochMash exhibition placard, legible in photograph) · Wikimedia Commons / TsNIITochMash · read 2026-09-02
- SR-3 Vikhr · Military-Today.com · read 2026-09-02
Last verified 2026-09-02 · review status: agent-populated