Image credit
- Title
- File:Daewoo K7 SMG at Defense Asia 2006 0.jpg
- Author
- shotgunlee(attribution required)
- Licence
- CC BY-SA 2.5
- Source
- https://commons.wikimedia.org/wiki/File:Daewoo_K7_SMG_at_Defense_Asia_2006_0.jpg
How Muzzle energy is calculated
E = ½ · m · v²
Inputs
- m7.452 g115.0 grverifiedsource115 gr as published, converted to grams.
- v359.7 m/s1,180 fpsverifiedMeasured with a 101.6 mm barrel, not this arm's 134 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 101.6 mm359.7 m/s1,180 fpsverifiedsource1180 fps as published.
Assumptions
- This figure belongs to a 101.6 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.
1 of 4 inputs link to their source.
How Free recoil is calculated
E_recoil = ½ · m_firearm · v_recoil²
Inputs
- m_firearm3.1 kg6.834 lbverifiedsourceAs published in SNT Motiv's own defence products catalogue.
- v_recoil0.8647 m/s2.837 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
- capacity30estimatedFrom the Wikipedia infobox, uncited there: a 30-round magazine; Uzi 30-round and Beretta PM12 32-round magazines are also stated to fit.
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
- m7.452 g115.0 grverifiedsource115 gr as published, converted to grams.
- v359.7 m/s1,180 fpsverifiedMeasured with a 101.6 mm barrel, not this arm's 134 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
- mass7.452 g115.0 grverifiedsource115 gr as published, converted to grams.
- diameter9.03 mm0.3555 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
- mass7.452 g115.0 grverifiedsource115 gr as published, converted to grams.
- velocity359.7 m/s1,180 fpsverifiedMeasured with a 101.6 mm barrel, not this arm's 134 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
- n30estimatedFrom the Wikipedia infobox, uncited there: a 30-round magazine; Uzi 30-round and Beretta PM12 32-round magazines are also stated to fit.
- rpm1,150 rpmestimatedsourceMidpoint of a published 1,050–1,250 rounds/min range.
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
- Submachine gun
- Action
- Self-loading
- Fire modes
- Semi-automatic
- Fully automatic
- Operating system
- Blowback, simple
- Designed in
- South Korea
- Produced in
- Introduced
- 2001
- Production
- 2001–present
Dimensions and mass
- Mass, empty
- 3.1 kg6.834 lbsource
As published in SNT Motiv's own defence products catalogue.
- Magazine, empty
- not recorded
- Length
- 788 mm31.02 inestimated
From the Wikipedia infobox, uncited there. Stock extended; retracted length is 606 mm.
- Length, folded
- 606 mm23.86 inestimated
From the Wikipedia infobox, uncited there. Stock retracted.
- Width
- not recorded
- Height
- not recorded
- Barrel length
- 134 mm5.276 inestimated
From the Wikipedia 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
Operation
- Cyclic rate
Midpoint of a published 1,050–1,250 rounds/min range.
- Trigger pull
- not recorded
- Effective range
- 125 m136.7 ydestimated
From the Wikipedia infobox, uncited there: midpoint of a published 100–150 m range.
- Units produced
- not recorded
- Launch price
- not recorded
Chamberings
- 9x19mm Parabellumprimary30 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.
- Daewoo Telecom K7788 mm31.02 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. Daewoo Telecom K7 records no height, so its outline is drawn at the type's proportion. That height is part of the shape, not a measurement.
Gallery
Image credit
- Title
- File:전쟁기념관 K7 소음기관단총.jpg
- Author
- 웬디러비(attribution required)
- Licence
- CC BY-SA 4.0
- Source
- https://commons.wikimedia.org/wiki/File:전쟁기념관_K7_소음기관단총.jpg
Detail
The K7 is an integrally suppressed 9×19mm submachine gun based on the Daewoo K1A, simplified by replacing the K1A’s gas system with a blowback action. The Republic of Korea Army Special Warfare Command asked for it as a cheaper alternative to importing or licence-building the suppressed MP5SD6, and the Agency for Defense Development and Daewoo Telecom developed it between 1998 and 2000, entering production in 2001. Its maker’s name on the type designation is already a fossil: the company has since traded as Daewoo Precision, S&T Daewoo, S&T Motiv and, from 2021, SNT Motiv, while continuing to build the same K-series weapons.
Mechanically the K7 is a straightforward blowback design, distinguished mainly by an integral suppressor built around its short 134 mm barrel, which lets the whole weapon collapse to little more than 600 mm with its stock retracted. It feeds from a proprietary 30-round box magazine, though it is also reported to accept Uzi 30-round and Beretta PM12 32-round magazines. South Korean special forces have been its principal user; the manufacturer’s own catalogue is the only source found for its mass, and no maker document gives a rifling twist rate, sight radius or independently verified cyclic rate for the weapon.
Cyclic rate and effective range on this page are recorded as estimated midpoints of published ranges rather than verified single figures, and overall length, folded length and barrel length come from an uncited Wikipedia infobox figure rather than a primary source.
References
This entry's own bibliography. Every citation key on this page resolves into this list.
- Daewoo Telecom K7 · Wikipedia · 1330428932 · read 2026-09-24 · CC BY-SA 4.0
- SNT Motiv Defense Products Catalogue · SNT Motiv · read 2026-09-24
- 선택된 특전사만 쓴다는 국산총기 K7 · Defense Media Agency · 2018 · read 2026-09-24
Last verified 2026-09-24 · review status: agent-populated