How Muzzle energy is calculated
E = ½ · m · v²
Inputs
- m3 g46.30 grestimatedWikipedia's infobox figure, attributed only to 'C.I.P.' with no clickable datasheet page located for this ballistics figure specifically. ½mv² from the stated 320 m/s reproduces 153.6 J, not the infobox's own published 128 J — an internal inconsistency in the source, noted rather than resolved by guessing which figure is correct.
- v320 m/s1,050 fpsestimatedMeasured with a 84 mm barrel, not this arm's 125 mm. Velocity outside the sourced range is not projected.
No input on this calculation carries a clickable source yet.
How Muzzle velocity is calculated
nearest sourced barrel length — no extrapolation (SPEC.md §8.2)
Inputs
- v at 84 mm320 m/s1,050 fpsestimatedWikipedia's infobox figure; see the note on bulletMass for the energy inconsistency this figure does not resolve.
Assumptions
- This figure belongs to a 84 mm barrel. It is shown because it is the closest measurement that exists, not because it applies here.
No input on this calculation carries a clickable source yet.
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_firearm0.96 kg2.116 lbestimatedsourcefrom the infobox, uncited on Wikipedia
- v_recoil1 m/s3.281 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
- capacity24estimatedsource24-round detachable double-column box magazine, from the infobox, uncited on Wikipedia
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
- m3 g46.30 grestimatedWikipedia's infobox figure, attributed only to 'C.I.P.' with no clickable datasheet page located for this ballistics figure specifically. ½mv² from the stated 320 m/s reproduces 153.6 J, not the infobox's own published 128 J — an internal inconsistency in the source, noted rather than resolved by guessing which figure is correct.
- v320 m/s1,050 fpsestimatedMeasured with a 84 mm barrel, not this arm's 125 mm. Velocity outside the sourced range is not projected.
No input on this calculation carries a clickable source yet.
How Sectional density is calculated
SD = mass(gr) / (7000 · diameter(in)²)
Inputs
- mass3 g46.30 grestimatedWikipedia's infobox figure, attributed only to 'C.I.P.' with no clickable datasheet page located for this ballistics figure specifically. ½mv² from the stated 320 m/s reproduces 153.6 J, not the infobox's own published 128 J — an internal inconsistency in the source, noted rather than resolved by guessing which figure is correct.
- diameter5.63 mm0.2217 inverifiedsource
Assumptions
- Reported in the conventional lb/in² so it is directly comparable with published figures.
1 of 2 inputs link to their source.
How Power factor is calculated
PF = mass(gr) · velocity(fps) / 1000
Inputs
- mass3 g46.30 grestimatedWikipedia's infobox figure, attributed only to 'C.I.P.' with no clickable datasheet page located for this ballistics figure specifically. ½mv² from the stated 320 m/s reproduces 153.6 J, not the infobox's own published 128 J — an internal inconsistency in the source, noted rather than resolved by guessing which figure is correct.
- velocity320 m/s1,050 fpsestimatedMeasured with a 84 mm barrel, not this arm's 125 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.
No input on this calculation carries a clickable source yet.
How Magazine dump is calculated
t = (n − 1) / (rpm / 60)
Inputs
- n24estimatedsource24-round detachable double-column box magazine, from the infobox, uncited on Wikipedia
- rpm1,800 rpmestimatedsourcefrom the infobox, uncited on Wikipedia, published as a single figure rather than a range
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
- Pistol
- Action
- Self-loading
- Fire modes
- Semi-automatic
- Fully automatic
- Operating system
- Blowback, simple
- Roles
- Designed in
- Russia
- Produced in
- Introduced
- 1993
- Production
- not recorded
Dimensions and mass
- Mass, empty
from the infobox, uncited on Wikipedia
- Magazine, empty
- not recorded
- Length
from the infobox, uncited on Wikipedia
- Length, folded
- not recorded
- Width
from the infobox, uncited on Wikipedia
- Height
from the infobox, uncited on Wikipedia
- Barrel length
from the infobox, uncited on Wikipedia
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
- 5.45×18mmprimary24 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.
- OTs-23 Drotik195 mm7.677 in
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.
Detail
The OTs-23 Drotik was designed at the KBP Instrument Design Bureau in Tula by Igor Stechkin together with A. V. Baltser and A. V. Zinchenko, and introduced in 1993 for Russian Interior Ministry (MVD) service. It followed Stechkin’s earlier automatic pistol, the APS, but where the APS fired the standard Soviet 9×18mm service round, the Drotik was chambered for the small-calibre 5.45×18mm developed two decades earlier for the compact PSM — a much lighter round than the 9mm-class chamberings usual in selective-fire pistols, and one already in Soviet service rather than designed for this pistol.
Mechanically it is a simple-blowback, selective-fire self-loading pistol, feeding from a 24-round double-column detachable box magazine — a high capacity for a handgun, driven by the same brief that produced its automatic-fire mode: giving an MVD or special-purpose officer a holster-carried weapon capable of short automatic bursts as well as aimed single shots. Its small-calibre, high-velocity cartridge was chosen to give useful penetration against soft body armour at short range while keeping the pistol light and controllable in automatic fire, a design goal distinct from the heavier, harder-recoiling 9mm-class rounds used in most other selective-fire pistols of its era.
Every figure in this entry is transcribed from Wikipedia’s infobox rather than a primary Russian-language source, and none of them carry an inline citation there, so all are recorded as estimated rather than verified. No free C.I.P. or SAAMI dimensional standard exists for the 5.45×18mm cartridge it fires, which was never commercialised outside Russian government channels. No photograph of the Drotik was found across Wikimedia Commons, the Smithsonian’s open collections or DVIDS.
References
This entry's own bibliography. Every citation key on this page resolves into this list.
- OTs-23 Drotik · Wikipedia · 1271529535 · read 2026-09-04 · CC BY-SA 4.0
Last verified 2026-09-04 · review status: draft