Madsen Maskinpistol m/41
- Category
- Submachine Gun
- Barrel
- 314 mm
- Weight, empty
- 4.60 kg
- Introduced
- 1941
About
What it is, and why it matters
The Madsen Maskinpistol m/41 was a Danish selective-fire submachine gun, a licensed copy of the Finnish Suomi KP/31 produced by Dansk Industri Syndikat (Madsen). Chambered in 9x19mm Parabellum and operating on a simple open-bolt blowback action, it fed from a 20-round detachable box magazine and was distinguished from the Finnish original by protective metal 'ears' flanking the front sight post. Only around 1,400 were built before the German occupation authorities halted production in August 1943.
The Danish m/41 was a home-built copy of Finland's famed Suomi KP/31, but its story was cut short: Denmark managed to complete only about 1,400 before the occupying Germans shut the Madsen line down in 1943.
A domestically manufactured Danish variant of the Suomi KP/31 built under license from Finland. The 9x19mm chambering and 314 mm barrel gave it strong effective range for a submachine gun.
Specification
Everything measured
IdentityWhat it is, who built it and when.
- Manufacturer
- Dansk Rekyl Riffel Syndikat / Dansk Industri Syndikat
- Category
- Submachine Gun
- Country
- Denmark
- Status
- Out of production
- Produced
- 1941 to 1943
DimensionsAs issued, without a magazine or an optic.
- Barrel
- 314 mm
- Overall length
- 870 mm
- Weight, empty
- 4.60 kg
ActionHow it cycles, what trips it, and what feeds it.
- Action
- Blowback
- Firing mechanism
- Open bolt
- Trigger
- Single stage
- Capacity
- 20
- Magazine
- Detachable box
MaterialsEach swatch is the material itself, not a colour chosen to stand for it.
- Frame
- Steel
- Barrel
- Steel
- Stock
- Wood
- Finish
- Blued
BallisticsFrom the service cartridge, not a handload.
- Muzzle velocity
- 396 m/s
- Muzzle energy
- 584 J
- Effective range
- 200 m
- Rate of fire
- 800 rpm
Trajectory
What the round does downrange
Solved from the muzzle figures and the bullet. The dashed rule is the effective range on the record, and the crosses are the steps the solver returned.
Features
What it has
What the record lists as fitted, drawn from the catalogue.
Wooden stock
Fixed firing pin bolt- Protective front sight ears
Selective fire
Standing
How it compares
Each figure against the firearms of the same type and cartridge that record it, or of the same type where that cartridge has too few. Positions are read to the nearest tenth.
| Measurement | This firearm | Median | Position |
|---|---|---|---|
| Empty weightAmong 201 9x19mm Parabellum submachine guns | 4.60 kg | 3.18 kg | Heavier than about 90% |
| Overall lengthAmong 200 9x19mm Parabellum submachine guns | 870 mm | 723 mm | Longer than about 90% |
| Barrel lengthAmong 202 9x19mm Parabellum submachine guns | 314 mm | 213 mm | Longer than about 90% |
| Magazine capacityAmong 204 9x19mm Parabellum submachine guns | 20 | 32 | Among the smallest capacities |
Answers
Questions about the Madsen Maskinpistol m/41
How much does the Madsen Maskinpistol m/41 weigh?
The Madsen Maskinpistol m/41 weighs 4.60 kg (10.14 lb) empty.
What caliber is the Madsen Maskinpistol m/41?
The Madsen Maskinpistol m/41 is chambered in 9x19mm Parabellum.
How many rounds does the Madsen Maskinpistol m/41 hold?
The Madsen Maskinpistol m/41 holds 20 rounds, fed from a detachable box magazine.
How long is the Madsen Maskinpistol m/41?
The Madsen Maskinpistol m/41 is 870 mm (34.3 in) long overall, with a 314 mm (12.4 in) barrel.
Who makes the Madsen Maskinpistol m/41?
The Madsen Maskinpistol m/41 is made by Dansk Rekyl Riffel Syndikat / Dansk Industri Syndikat (Denmark). It was designed by Aimo Lahti.
When was the Madsen Maskinpistol m/41 introduced?
The Madsen Maskinpistol m/41 was introduced in 1941 and discontinued in 1943.
How does the Madsen Maskinpistol m/41 operate?
The Madsen Maskinpistol m/41 uses a blowback action, and its firing mechanism is open bolt.
Compatibility
Which parts fit this firearm
Studio
Every part that mounts on this, resolved
Not a list the maker typed out: the answer comes from the mounts this firearm exposes and the interface each part needs, so it stays right when either one changes.
- Every part that mounts on any firearm in the catalogue
- Interface standards, platforms and fit overrides
- The same answers through the API and the MCP server
Requires a signed-in GunSpec account on the Studio plan. The answer is computed per part, so it is not part of the public record.
Provenance
What the record holds
Every figure above was taken from one of these pages. The confidence reflects how much of the record came from a page a claim can be checked against.
In service
- Royal Danish Army
- 1941
Provenance
Confidence in this record
68%
Stockists
Where to buy
Offers link straight to the shop. GunSpec never takes the order.
No shop has listed this firearm yet
Stock and prices come from the shops themselves. If you sell this firearm, you can list it and it appears here.
List a firearmMCP
Ask an assistant about it
The same record, reached the way a person asks for it rather than the way a program does.
Ask GunSpec
Works with
Point an MCP client at GunSpec and it answers from the catalogue rather than from memory. A free key covers the read tools.
API
The call that returns this record
The same fields, in the same units, from the same endpoint the page reads.
curl --request GET \ --url 'https://api.gunspec.io/v1/firearms/madsen-maskinpistol-m-41' \ --header 'X-API-Key: your_key'{ "id": "madsen-maskinpistol-m-41", "name": "Madsen Maskinpistol m/41", "manufacturer": { "id": "dansk-industri-syndikat", "name": "Dansk Rekyl Riffel Syndikat / Dansk Industri Syndikat", "countryCode": "DK", "foundedYear": 1896, "website": null, "logoUrl": null, "description": null, "status": null, "defunctYear": null, "stateOwned": null, "makesFirearms": null, "parentId": null, "predecessorId": null, "createdAt": "2026-04-26 23:12:00", "updatedAt": "2026-04-26 23:12:00", "version": "a6b761e89dd9a8725e4b9a74b1fd4002295146f177a2b8659707c4894bbb52bc" }, "category": { "id": "submachine-gun", "name": "Submachine Gun", "description": "Automatic firearms chambered in pistol calibers" }, "country_of_origin": "DK", "year_introduced": 1941, "barrel_length_mm": 314, "weight_empty_g": 4600, "action_type": "blowback"}