DS Arms SA58
- Category
- Battle Rifle
- Barrel
- 457 mm
- Weight, empty
- 4.01 kg
- Introduced
- 1987
About
What it is, and why it matters
The DS Arms SA58 is a US-made semi-automatic recreation of the FN FAL battle rifle, chambered in 7.62x51mm NATO and manufactured by DS Arms of Barrington, Illinois. Unlike many FAL builders that assemble imported parts kits, DS Arms fabricates the complete rifle in-house using new-production receivers and 4150 chrome-lined barrels, building on tooling originally acquired from Steyr's Austrian FAL line. The SA58 retains the FAL's classic tilting-bolt, short-stroke gas-piston action with an adjustable gas regulator, offering the rugged reliability of 'the right arm of the free world' in a modern, ITAR-compliant US-manufactured package. It is offered in a wide range of barrel lengths and stock configurations, from 16-inch carbines to 21-inch traditional rifles.
DS Arms got into the FAL business by buying the original Steyr FAL production tooling out of Austria, making it one of the only companies producing genuinely new-manufacture FAL rifles in the United States rather than reworking surplus parts kits.
The SA58 is built around the metric-pattern FN FAL and accepts metric FAL magazines. DS Arms offers both Type 1 (lightweight) and Type 2 (standard) receivers. The standard traditional-profile rifle uses an 18-inch barrel; this entry reflects that baseline configuration. Muzzle velocity varies with barrel length.
Specification
Everything measured
IdentityWhat it is, who built it and when.
- Manufacturer
- DS Arms, Inc.
- Category
- Battle Rifle
- Country
- United States
- Status
- In production
- Produced
- 1987
- Variant of
- Us made semi auto
DimensionsAs issued, without a magazine or an optic.
- Barrel
- 457 mm
- Overall length
- 1010 mm
- Weight, empty
- 4.01 kg
ActionHow it cycles, what trips it, and what feeds it.
- Action
- Gas operated short stroke
- Firing mechanism
- Hammer fired
- 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
- Polymer
- Finish
- Phosphate
BallisticsFrom the service cartridge, not a handload.
- Muzzle velocity
- 838 m/s
- Muzzle energy
- 3469 J
- Effective range
- 600 m
- Maximum range
- 3000 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.
Tilting bolt
Adjustable gas regulator
Us made 4150 chrome lined barrel
Type 1 or type 2 receiver
Fal pattern metric magazine compatible
Adjustable iron sights
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 86 7.62x51mm NATO battle rifles | 4.01 kg | 4.30 kg | Lighter than about 70% |
| Overall lengthAmong 85 7.62x51mm NATO battle rifles | 1010 mm | 1025 mm | Shorter than about 60% |
| Barrel lengthAmong 87 7.62x51mm NATO battle rifles | 457 mm | 458 mm | Shorter than about 60% |
| Magazine capacityAmong 87 7.62x51mm NATO battle rifles | 20 | 20 | Near the median |
Answers
Questions about the DS Arms SA58
How much does the DS Arms SA58 weigh?
The DS Arms SA58 weighs 4.01 kg (8.83 lb) empty.
What caliber is the DS Arms SA58?
The DS Arms SA58 is chambered in 7.62x51mm NATO.
How many rounds does the DS Arms SA58 hold?
The DS Arms SA58 holds 20 rounds, fed from a detachable box magazine.
How long is the DS Arms SA58?
The DS Arms SA58 is 1010 mm (39.8 in) long overall, with a 457 mm (18.0 in) barrel.
Who makes the DS Arms SA58?
The DS Arms SA58 is made by DS Arms, Inc. (United States). It was designed by Dieudonne Saive (original FN FAL design).
When was the DS Arms SA58 introduced?
The DS Arms SA58 was introduced in 1987.
How does the DS Arms SA58 operate?
The DS Arms SA58 uses a gas operated short stroke 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 sport/competition shooters
- 1987
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/dsa-sa58' \ --header 'X-API-Key: your_key'{ "id": "dsa-sa58", "name": "DS Arms SA58", "manufacturer": { "id": "ds-arms", "name": "DS Arms, Inc.", "countryCode": "US", "foundedYear": 1987, "website": "https://dsarms.com", "logoUrl": null, "description": null, "status": null, "defunctYear": null, "stateOwned": null, "makesFirearms": null, "parentId": null, "predecessorId": null, "createdAt": "2026-06-21 23:00:46", "updatedAt": "2026-06-21 23:00:46", "version": "320d953d0dfa4ab0a7df9baf1254b2d303f179c0ede9d92fc7c4dc6e90be3022" }, "category": { "id": "battle-rifle", "name": "Battle Rifle", "description": "Selective-fire rifles chambered in full-power cartridges" }, "country_of_origin": "US", "year_introduced": 1987, "barrel_length_mm": 457, "weight_empty_g": 4006, "action_type": "gas_operated_short_stroke"}