Mossberg Model 346
- Category
- Rifle
- Barrel
- 610 mm
- Weight, empty
- 2.95 kg
- Introduced
- 1958
About
What it is, and why it matters
The Mossberg Model 346 is an American hammerless bolt-action repeating .22 rimfire sporting rifle produced by O.F. Mossberg & Sons from 1958 to 1971. Chambered for interchangeable .22 Short, .22 Long, and .22 Long Rifle rimfire cartridges, it fed from a tubular magazine holding up to 18 Long Rifle rounds and paired a 24-inch barrel with a walnut Monte Carlo stock featuring a cheekpiece, pistol grip, and sling swivels. Marketed as an affordable, well-appointed field and plinking rifle, the 346 sold in two principal configurations distinguished chiefly by their sighting equipment.
Part of Mossberg's mid-century line of inexpensive but nicely finished .22 sporters, the 346 offered a walnut Monte Carlo stock and high-capacity tubular magazine at a working-family price, making it a common first rifle and small-game gun across postwar America.
The tubular magazine capacity varied by cartridge: 18 rounds of .22 Long Rifle, 20 of .22 Long, or 25 of .22 Short. The Model 346B carried a receiver-mounted aperture (peep) sight while the Model 346K used open sights; both shared the same action, barrel, and stock. Later production carried A/B/C suffixes reflecting minor running changes.
Specification
Everything measured
IdentityWhat it is, who built it and when.
- Manufacturer
- O.F. Mossberg & Sons
- Category
- Rifle
- Country
- United States
- Status
- Discontinued
- Produced
- 1958 to 1971
DimensionsAs issued, without a magazine or an optic.
- Barrel
- 610 mm
- Overall length
- 1092 mm
- Weight, empty
- 2.95 kg
ActionHow it cycles, what trips it, and what feeds it.
- Action
- Bolt action
- Firing mechanism
- Striker fired
- Trigger
- Single action
- Capacity
- 18
- Magazine
- Tubular
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
- 320 m/s
- Muzzle energy
- 130 J
- Effective range
- 100 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.
Tubular magazine
Monte carlo stock
Cheekpiece
Pistol grip
Ramp front sight
Receiver peep sight
Sling swivels
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 215 .22 Long Rifle rifles | 2.95 kg | 2.61 kg | Heavier than about 70% |
| Overall lengthAmong 207 .22 Long Rifle rifles | 1092 mm | 1016 mm | Longer than about 80% |
| Barrel lengthAmong 228 .22 Long Rifle rifles | 610 mm | 547 mm | Longer than about 70% |
| Magazine capacityAmong 231 .22 Long Rifle rifles | 18 | 6 | Holds more rounds than about 90% |
Answers
Questions about the Mossberg Model 346
How much does the Mossberg Model 346 weigh?
The Mossberg Model 346 weighs 2.95 kg (6.50 lb) empty.
What caliber is the Mossberg Model 346?
The Mossberg Model 346 is chambered in .22 Long Rifle.
How many rounds does the Mossberg Model 346 hold?
The Mossberg Model 346 holds 18 rounds, fed from a tubular magazine.
How long is the Mossberg Model 346?
The Mossberg Model 346 is 1092 mm (43.0 in) long overall, with a 610 mm (24.0 in) barrel.
Who makes the Mossberg Model 346?
The Mossberg Model 346 is made by O.F. Mossberg & Sons (United States). It was designed by O.F. Mossberg & Sons.
When was the Mossberg Model 346 introduced?
The Mossberg Model 346 was introduced in 1958 and discontinued in 1971.
How does the Mossberg Model 346 operate?
The Mossberg Model 346 uses a bolt action, and its firing mechanism is striker 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.
Provenance
Confidence in this record
76%
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/mossberg-model-346' \ --header 'X-API-Key: your_key'{ "id": "mossberg-model-346", "name": "Mossberg Model 346", "manufacturer": { "id": "mossberg", "name": "O.F. Mossberg & Sons", "countryCode": "US", "foundedYear": 1919, "website": "https://www.mossberg.com", "logoUrl": null, "description": null, "status": null, "defunctYear": null, "stateOwned": null, "makesFirearms": null, "parentId": null, "predecessorId": null, "createdAt": "2026-02-11 23:44:40", "updatedAt": "2026-02-18 03:40:45", "version": "efbce48d45f2bf96c91e5b66c03052b97d55affea9178a31feda8fd7fc882671" }, "category": { "id": "rifle", "name": "Rifle", "description": "Long-barreled firearms designed for accurate shooting" }, "country_of_origin": "US", "year_introduced": 1958, "barrel_length_mm": 610, "weight_empty_g": 2948, "action_type": "bolt_action"}