Ancion-Marx 12-Gauge Hammer Shotgun
- Category
- Shotgun
- Barrel
- Not recorded
- Weight, empty
- Not recorded
- Introduced
- Not recorded
About
What it is, and why it matters
The Ancion-Marx 12-gauge hammer shotgun is a break-action, side-by-side double-barrel shotgun built by the Liège gunmaker Léopold Ancion-Marx. It uses a top-lever-operated break action with central-percussion, exposed external hammers, twin triggers, and back-action locks, mounted on a walnut pistol-grip stock. It is representative of the diversified sporting long-gun output of the Ancion-Marx factory in the late 19th and early 20th centuries.
Léopold Ancion-Marx ran his arms factory on Rue Grandgagnage in Liège from 1890 into the mid-20th century, filing eleven patents and seven trademarks between 1897 and 1933 and marking his guns with an 'LAM' monogram inside a triangle.
Documented from a surviving example (serial M11474) carrying Liège proofhouse marks dating manufacture to between 1898 and 1924. Physical dimensions (barrel length, overall length, weight) are not recorded for this specimen and are left null rather than estimated.
Specification
Everything measured
IdentityWhat it is, who built it and when.
- Manufacturer
- Fabrique d'Armes Léopold Ancion-Marx
- Category
- Shotgun
- Country
- Belgium
- Status
- Discontinued
ActionHow it cycles, what trips it, and what feeds it.
- Action
- Break action
- Firing mechanism
- Hammer fired
- Trigger
- Single action
- Capacity
- 2
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.
- Effective range
- 40 m
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.
No load solved for this record yetThe flight path is computed from a cartridge and a bullet. This record has no ammunition filed against its chambering, so there is nothing to solve.
Features
What it has
What the record lists as fitted, drawn from the catalogue.
Side by side barrels
External hammers
Top lever break action
Double trigger
Walnut pistol grip stock
Standing
How it compares
This record has too few measurements to compare with others yet.
Answers
Questions about the Ancion-Marx 12-Gauge Hammer Shotgun
What caliber is the Ancion-Marx 12-Gauge Hammer Shotgun?
The Ancion-Marx 12-Gauge Hammer Shotgun is chambered in 12 Gauge.
How many rounds does the Ancion-Marx 12-Gauge Hammer Shotgun hold?
The Ancion-Marx 12-Gauge Hammer Shotgun holds 2 rounds.
Who makes the Ancion-Marx 12-Gauge Hammer Shotgun?
The Ancion-Marx 12-Gauge Hammer Shotgun is made by Fabrique d'Armes Léopold Ancion-Marx (Belgium). It was designed by Léopold Ancion-Marx.
How does the Ancion-Marx 12-Gauge Hammer Shotgun operate?
The Ancion-Marx 12-Gauge Hammer Shotgun uses a break action, and its firing mechanism is hammer fired.
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
- Civilian hunters and sport shooters
- Belgium
Provenance
Confidence in this record
62%
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/ancion-marx' \ --header 'X-API-Key: your_key'{ "id": "ancion-marx", "name": "Ancion-Marx 12-Gauge Hammer Shotgun", "manufacturer": { "id": "ancion-marx", "name": "Fabrique d'Armes Léopold Ancion-Marx", "countryCode": "BE", "foundedYear": 1890, "website": null, "logoUrl": null, "description": null, "status": null, "defunctYear": null, "stateOwned": null, "makesFirearms": null, "parentId": null, "predecessorId": null, "createdAt": "2026-07-19 22:59:14", "updatedAt": "2026-07-19 22:59:14", "version": "f24f0e1e305b11e1c554634fd3935007cdf6896d4d14f3d1d95f7a2b38ffc781" }, "category": { "id": "shotgun", "name": "Shotgun", "description": "Smoothbore firearms designed to fire shot or slugs" }, "country_of_origin": "BE", "year_introduced": null, "barrel_length_mm": null, "weight_empty_g": null, "action_type": "break_action"}