Mossberg 510 Mini
- Category
- Shotgun
- Barrel
- 470 mm
- Weight, empty
- 2.27 kg
- Introduced
- 2010
About
What it is, and why it matters
The Mossberg 510 Mini is a compact pump-action shotgun built as a scaled-down youth and small-frame version of the Mossberg 500 platform. Chambered in 20 gauge (and .410 bore), it pairs a shortened 18.5-inch vent-rib barrel with an adjustable length of pull, an EZ-Reach forend, and a smaller grip so that younger or smaller-statured shooters can comfortably reach the trigger and cycle the action. It retains the 500-series pump features of dual extractors, twin action bars, a tang safety, and an anti-jam elevator.
Introduced as the smallest member of Mossberg's Bantam line, the 510 Mini answered a long-standing demand for a genuinely youth-sized pump shotgun rather than a merely shortened adult gun, giving new hunters a lightweight platform they can grow into via the adjustable stock.
Marketed under the '510 Mini Super Bantam' name; length of pull adjusts roughly 10.5 to 11.5 inches via a supplied stock spacer. Also offered in .410 bore.
Specification
Everything measured
IdentityWhat it is, who built it and when.
- Manufacturer
- O.F. Mossberg & Sons
- Category
- Shotgun
- Country
- United States
- Status
- In production
- Produced
- 2010
DimensionsAs issued, without a magazine or an optic.
- Barrel
- 470 mm
- Overall length
- 883 mm
- Weight, empty
- 2.27 kg
ActionHow it cycles, what trips it, and what feeds it.
- Action
- Pump action
- Firing mechanism
- Hammer fired
- Trigger
- Single action
- Capacity
- 3
- Magazine
- Tubular
MaterialsEach swatch is the material itself, not a colour chosen to stand for it.
- Frame
- Aluminum alloy
- Barrel
- Steel
- Stock
- Synthetic
- Finish
- Matte blued
BallisticsFrom the service cartridge, not a handload.
- Muzzle velocity
- 380 m/s
- Muzzle energy
- 1734 J
- 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.
Vent rib barrel
Adjustable length of pull
Ez reach forend
Dual extractors
Twin action bars
Anti jam elevator
Front bead sight
3 inch chamber
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 40 20 Gauge shotguns | 2.27 kg | 2.90 kg | Among the lightest tenth |
| Overall lengthAmong 36 20 Gauge shotguns | 883 mm | 1156 mm | Among the shortest tenth |
| Barrel lengthAmong 42 20 Gauge shotguns | 470 mm | 711 mm | Shorter than about 90% |
| Magazine capacityAmong 41 20 Gauge shotguns | 3 | 2 | Holds more rounds than about 70% |
Its place in the rankings
Answers
Questions about the Mossberg 510 Mini
How much does the Mossberg 510 Mini weigh?
The Mossberg 510 Mini weighs 2.27 kg (5.00 lb) empty. It is the 1st lightest of 40 20 Gauge shotguns in the catalogue.
What caliber is the Mossberg 510 Mini?
The Mossberg 510 Mini is chambered in 20 Gauge.
How many rounds does the Mossberg 510 Mini hold?
The Mossberg 510 Mini holds 3 rounds, fed from a tubular magazine.
How long is the Mossberg 510 Mini?
The Mossberg 510 Mini is 883 mm (34.8 in) long overall, with a 470 mm (18.5 in) barrel.
Who makes the Mossberg 510 Mini?
The Mossberg 510 Mini is made by O.F. Mossberg & Sons (United States). It was designed by O.F. Mossberg & Sons.
When was the Mossberg 510 Mini introduced?
The Mossberg 510 Mini was introduced in 2010.
How does the Mossberg 510 Mini operate?
The Mossberg 510 Mini uses a pump 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.
Provenance
Confidence in this record
82%
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-510-mini' \ --header 'X-API-Key: your_key'{ "id": "mossberg-510-mini", "name": "Mossberg 510 Mini", "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": "shotgun", "name": "Shotgun", "description": "Smoothbore firearms designed to fire shot or slugs" }, "country_of_origin": "US", "year_introduced": 2010, "barrel_length_mm": 470, "weight_empty_g": 2268, "action_type": "pump_action"}