Beretta ARX100
- Category
- Rifle
- Barrel
- 406 mm
- Weight, empty
- 3.00 kg
- Introduced
- 2014
About
What it is, and why it matters
The Beretta ARX100 is a semi-automatic rifle, the civilian-market version of the military Beretta ARX-160 assault rifle. Introduced at the 2014 SHOT Show and sold through Beretta USA, the ARX100 is chambered in 5.56x45mm NATO and retains the modular architecture of its select-fire parent while being restricted to semi-automatic fire. It uses a short-stroke gas piston operating system with a rotating bolt and makes extensive use of polymer in its chassis to keep weight low. Like the ARX-160, the rifle is fully ambidextrous: the case ejection direction can be switched between left and right without tools, and the controls are mirrored on both sides. It accepts standard STANAG 4179 (AR-15/M16) magazines and is fitted with a 16-inch barrel and a side-folding, six-position telescoping stock. Multiple Picatinny rails allow mounting of optics, lights, and accessories.
The ARX100 was the consumer-facing face of Beretta's ARX program, letting U.S. shooters own a semi-automatic version of the rifle Beretta had developed for the Italian Army's Soldato Futuro future-soldier project. Its tool-less reversible ejection made it one of the few truly ambidextrous rifles on the civilian market, though it never displaced the entrenched AR-15 platform.
The ARX100 was Beretta's bid to bring its modern modular rifle platform to the U.S. commercial market, competing with AR-15 pattern rifles and other piston carbines such as the FN SCAR 16S and HK MR556. The tool-less switchable ejection and quick-takedown features were major selling points. Despite a positive critical reception, the rifle saw limited commercial sales and was quietly discontinued around 2018.
Specification
Everything measured
IdentityWhat it is, who built it and when.
- Manufacturer
- Beretta
- Category
- Rifle
- Country
- Italy
- Status
- Discontinued
- Produced
- 2014 to 2018
- Variant of
- Semi automatic civilian
DimensionsAs issued, without a magazine or an optic.
- Barrel
- 406 mm
- Overall length
- 900 mm
- Weight, empty
- 3.00 kg
- Weight, loaded
- 3.57 kg
ActionHow it cycles, what trips it, and what feeds it.
- Action
- Gas operated short stroke piston
- Firing mechanism
- Hammer fired
- Trigger
- Single stage
- Trigger pull
- 30.0 N
- Capacity
- 30
- Magazine
- Detachable box
MaterialsEach swatch is the material itself, not a colour chosen to stand for it.
- Frame
- Polymer
- Barrel
- Steel
- Stock
- Polymer
- Finish
- Matte black
BallisticsFrom the service cartridge, not a handload.
- Muzzle velocity
- 950 m/s
- Muzzle energy
- 1730 J
- Effective range
- 500 m
- Maximum range
- 3600 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.
Features
What it has
What the record lists as fitted, drawn from the catalogue.
Short stroke gas piston
Ambidextrous controls
Convertible ejection port
Foldable stock
Telescoping stock
Rotating bolt
Picatinny rails
Stanag magazine compatible
Tool less disassembly
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 84 5.56x45mm NATO rifles | 3.00 kg | 3.08 kg | Lighter than about 60% |
| Overall lengthAmong 77 5.56x45mm NATO rifles | 900 mm | 900 mm | Near the median |
| Barrel lengthAmong 98 5.56x45mm NATO rifles | 406 mm | 406 mm | Shorter than about 60% |
| Magazine capacityAmong 98 5.56x45mm NATO rifles | 30 | 30 | Near the median |
Answers
Questions about the Beretta ARX100
How much does the Beretta ARX100 weigh?
The Beretta ARX100 weighs 3.00 kg (6.61 lb) empty and 3.57 kg (7.87 lb) loaded.
What caliber is the Beretta ARX100?
The Beretta ARX100 is chambered in 5.56x45mm NATO.
How many rounds does the Beretta ARX100 hold?
The Beretta ARX100 holds 30 rounds, fed from a detachable box magazine.
How long is the Beretta ARX100?
The Beretta ARX100 is 900 mm (35.4 in) long overall, with a 406 mm (16.0 in) barrel.
Who makes the Beretta ARX100?
The Beretta ARX100 is made by Beretta (Italy).
When was the Beretta ARX100 introduced?
The Beretta ARX100 was introduced in 2014 and discontinued in 2018.
How does the Beretta ARX100 operate?
The Beretta ARX100 uses a gas operated short stroke piston 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
- United States Civilian Market
- 2014
Provenance
Confidence in this record
78%
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/beretta-arx100' \ --header 'X-API-Key: your_key'{ "id": "beretta-arx100", "name": "Beretta ARX100", "manufacturer": { "id": "beretta", "name": "Beretta", "countryCode": "IT", "foundedYear": 1526, "website": "https://www.beretta.com", "logoUrl": null, "description": null, "status": null, "defunctYear": null, "stateOwned": null, "makesFirearms": null, "parentId": null, "predecessorId": null, "createdAt": "2026-02-11 23:44:38", "updatedAt": "2026-02-18 03:43:40", "version": "8b9fe1893419c995aa99c862828f03dd5729ecd351a2fed53e95d04b9a47918f" }, "category": { "id": "rifle", "name": "Rifle", "description": "Long-barreled firearms designed for accurate shooting" }, "country_of_origin": "IT", "year_introduced": 2014, "barrel_length_mm": 406, "weight_empty_g": 3000, "action_type": "gas_operated_short_stroke_piston"}