PTR A3S
- Category
- Battle Rifle
- Barrel
- 457 mm
- Weight, empty
- 4.31 kg
- Introduced
- 2010
About
What it is, and why it matters
The PTR A3S is PTR Industries' modern full-length .308 roller-delayed blowback rifle, the contemporary evolution of the PTR 91 platform. It features an 18-inch stress-relieved barrel threaded 5/8x24, an integrated 7.5-inch welded steel Picatinny rail for direct optics mounting, a heat-treated full-auto-profile bolt carrier, a fixed stock and a slim-line polymer handguard. Finished in black powder coat over Parkerizing, it offers suppressor-ready capability and contemporary optics compatibility while retaining the proven G3-pattern roller-locked action.
MSRP approximately $1,645-$1,725. SKU PTR109. Available in standard, California-compliant and Vermont-compliant configurations. The A3SK variant adds a collapsible stock. Trigger pull 9-10 lbs.
Specification
Everything measured
IdentityWhat it is, who built it and when.
- Manufacturer
- PTR Industries
- Category
- Battle Rifle
- Country
- United States
- Status
- In production
- Produced
- 2010
- Variant of
- Modern fixed stock
DimensionsAs issued, without a magazine or an optic.
- Barrel
- 457 mm
- Overall length
- 1029 mm
- Weight, empty
- 4.31 kg
ActionHow it cycles, what trips it, and what feeds it.
- Action
- Roller delayed blowback
- 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
- Stamped steel
- Barrel
- Chrome moly steel
- Stock
- Polymer
- Finish
- Powder coat
BallisticsFrom the service cartridge, not a handload.
- Muzzle velocity
- 780 m/s
- Muzzle energy
- 3100 J
- Effective range
- 500 m
- Maximum range
- 1000 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.
Roller delayed blowback
Stamped steel receiver
Fluted chamber
Welded steel picatinny rail
Slim line polymer handguard
Fixed stock
Threaded muzzle
Made in usa
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 | 4.31 kg | 4.30 kg | Heavier than about 60% |
| Overall lengthAmong 85 7.62x51mm NATO battle rifles | 1029 mm | 1025 mm | Near the median |
| 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 PTR A3S
How much does the PTR A3S weigh?
The PTR A3S weighs 4.31 kg (9.50 lb) empty.
What caliber is the PTR A3S?
The PTR A3S is chambered in 7.62x51mm NATO.
How many rounds does the PTR A3S hold?
The PTR A3S holds 20 rounds, fed from a detachable box magazine.
How long is the PTR A3S?
The PTR A3S is 1029 mm (40.5 in) long overall, with a 457 mm (18.0 in) barrel.
Who makes the PTR A3S?
The PTR A3S is made by PTR Industries (United States).
When was the PTR A3S introduced?
The PTR A3S was introduced in 2010.
How does the PTR A3S operate?
The PTR A3S uses a roller delayed blowback 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
- US civilian market
- 2010
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/ptr-a3s' \ --header 'X-API-Key: your_key'{ "id": "ptr-a3s", "name": "PTR A3S", "manufacturer": { "id": "ptr-industries", "name": "PTR Industries", "countryCode": "US", "foundedYear": 1997, "website": "https://www.ptr-us.com", "logoUrl": null, "description": null, "status": null, "defunctYear": null, "stateOwned": null, "makesFirearms": null, "parentId": null, "predecessorId": null, "createdAt": "2026-05-26 23:17:02", "updatedAt": "2026-05-26 23:17:02", "version": "4a695a04678d38a3d8f616171095bbcf66a3875235954454143dbc622fee2b62" }, "category": { "id": "battle-rifle", "name": "Battle Rifle", "description": "Selective-fire rifles chambered in full-power cartridges" }, "country_of_origin": "US", "year_introduced": 2010, "barrel_length_mm": 457, "weight_empty_g": 4309, "action_type": "roller_delayed_blowback"}