Accuracy International AX50
- Category
- Sniper Rifle
- Barrel
- 686 mm
- Weight, empty
- 12.50 kg
- Introduced
- 2010
About
What it is, and why it matters
The Accuracy International AX50 is a bolt-action anti-materiel rifle chambered in .50 BMG, introduced in 2010 as the next-generation replacement for the AW50 series. Built on AI's modern AX chassis platform, the AX50 weighs 12.5 kg and features a 686mm free-floated stainless steel barrel with a 1:15-inch twist rate. The rifle uses a 60-degree bolt throw with a 30mm diameter bolt, and the stock folds to the left for reduced transport length. A two-stage trigger adjustable from 1.5 to 2.0 kg provides consistent shot placement. The 5-round single-stack detachable box magazine feeds reliably, and the integrated Picatinny rail accommodates a wide range of optics. The barrel can be changed in the field in under 10 minutes without tools. The firing pin cocking indicator allows the operator to verify chamber status by feel in low-light conditions.
The AX50 was designed to bring Accuracy International's legendary precision to the .50 BMG anti-materiel role, combining the ergonomic advances of the AX platform with the raw power needed to defeat hard targets, vehicles, and equipment at extreme range.
The AX50 represents a significant advancement over the AW50, incorporating the modular AX chassis design with improved ergonomics and adjustability. The newer AX50 ELR variant includes the patented Quickloc barrel system for tool-free barrel changes using a hex key stored under the cheek piece, plus a 10-round double-stack magazine. The 1:15-inch twist rate is standard for .50 BMG and provides excellent stabilization of the heavy projectiles. Despite being an anti-materiel rifle, the AX50 maintains sub-MOA accuracy at extended ranges when used with match-grade ammunition.
Specification
Everything measured
IdentityWhat it is, who built it and when.
- Manufacturer
- Accuracy International
- Category
- Sniper Rifle
- Country
- United Kingdom
- Status
- In production
- Produced
- 2010
DimensionsAs issued, without a magazine or an optic.
- Barrel
- 686 mm
- Overall length
- 1370 mm
- Weight, empty
- 12.50 kg
- Weight, loaded
- 13.20 kg
ActionHow it cycles, what trips it, and what feeds it.
- Action
- Bolt action
- Firing mechanism
- Striker fired
- Trigger
- Two stage
- Trigger pull
- 17.0 N
- Capacity
- 5
- Magazine
- Detachable single stack box
MaterialsEach swatch is the material itself, not a colour chosen to stand for it.
- Frame
- Aluminum alloy
- Barrel
- Stainless steel
- Stock
- Aluminum chassis polymer furniture
- Finish
- Matte black
BallisticsFrom the service cartridge, not a handload.
- Muzzle velocity
- 890 m/s
- Muzzle energy
- 16600 J
- Effective range
- 1800 m
- Maximum range
- 6800 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.
Free floating barrel
Folding stock
Adjustable cheek piece
Adjustable buttpad
Picatinny rail
Muzzle brake
Suppressor ready
Quick change barrel
Rear monopod
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 31 12.7x99mm NATO sniper rifles | 12.50 kg | 12.43 kg | Near the median |
| Overall lengthAmong 31 12.7x99mm NATO sniper rifles | 1370 mm | 1384 mm | Shorter than about 60% |
| Barrel lengthAmong 31 12.7x99mm NATO sniper rifles | 686 mm | 737 mm | Shorter than about 90% |
| Magazine capacityAmong 31 12.7x99mm NATO sniper rifles | 5 | 5 | Near the median |
Answers
Questions about the Accuracy International AX50
How much does the Accuracy International AX50 weigh?
The Accuracy International AX50 weighs 12.50 kg (27.56 lb) empty and 13.20 kg (29.10 lb) loaded.
What caliber is the Accuracy International AX50?
The Accuracy International AX50 is chambered in .50 BMG.
How many rounds does the Accuracy International AX50 hold?
The Accuracy International AX50 holds 5 rounds, fed from a detachable single stack box magazine.
How long is the Accuracy International AX50?
The Accuracy International AX50 is 1370 mm (53.9 in) long overall, with a 686 mm (27.0 in) barrel.
Who makes the Accuracy International AX50?
The Accuracy International AX50 is made by Accuracy International (United Kingdom).
When was the Accuracy International AX50 introduced?
The Accuracy International AX50 was introduced in 2010.
How does the Accuracy International AX50 operate?
The Accuracy International AX50 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.
In service
- British Armed Forces
- United Kingdom
- Australian Defence Force
- Australia
Provenance
Confidence in this record
90%
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/accuracy-international-ax50' \ --header 'X-API-Key: your_key'{ "id": "accuracy-international-ax50", "name": "Accuracy International AX50", "manufacturer": { "id": "accuracy-international", "name": "Accuracy International", "countryCode": "GB", "foundedYear": 1978, "website": "https://www.accuracyinternational.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 03:43:34", "version": "866df02489fa366bae9eb49362c9e929d73f7a1c5456d99b5727d9c049063c47" }, "category": { "id": "sniper-rifle", "name": "Sniper Rifle", "description": "Precision rifles optimized for long-range accuracy" }, "country_of_origin": "GB", "year_introduced": 2010, "barrel_length_mm": 686, "weight_empty_g": 12500, "action_type": "bolt_action"}