2A Armament Xanthos-Lite XLR-18 .308
- Category
- Battle Rifle
- Barrel
- 457 mm
- Weight, empty
- 3.06 kg
- Introduced
- 2016
About
What it is, and why it matters
The 2A Armament Xanthos-Lite XLR-18 is 2A's large-frame .308 / AR-10-pattern rifle and the big-bore counterpart to the Balios Lite. Built on CNC-machined 7075-T6 billet upper and lower receivers -- the upper fluted to save weight -- it features a flared mag well, rear tensioning screw and a 'slick side' design. The 18-inch lightweight 2A-contour barrel is 4150 steel with a QPQ Nitride finish, .308 Match chamber, rifle-length gas system and a 1:10 twist. Heavy use of titanium -- the gas block, takedown pins and X4/X5 muzzle brake -- keeps the complete rifle to roughly 6.75 pounds, exceptionally light for a .308 semi-auto. It uses the Xanthos-Lite 15-inch M-LOK free-float handguard, a CMC two-stage flat trigger, a Magpul MIAD grip and a Mission First Tactical stock, and feeds from SR-25 / DPMS-pattern magazines.
Named for the second of Achilles' immortal horses, the Xanthos-Lite brought 2A Armament's titanium-and-billet weight-saving formula to the large-frame AR, producing a .308 semi-auto that weighs about the same as a loaded service rifle yet retains an 18-inch barrel and match chamber.
MSRP around $2,433. Complete rifle weight approximately 6.75 lb -- lighter than many AR-15s. 18-inch 4150 barrel, QPQ Nitride, .308 Match chamber, rifle-length gas, 1:10 twist. CMC two-stage 2 lb trigger. Titanium gas block, takedown pins and X4/X5 brake. Rail offered in straight-cut and slant-cut variants. Also offered in 6.5 Creedmoor (often with a 20-inch Faxon barrel) and in longer 20-inch .308 configurations. Common SKU: XRC18SC15BLK1. Feeds from SR-25/DPMS .308 magazines; built to order, 4-8 week build time.
Specification
Everything measured
IdentityWhat it is, who built it and when.
- Manufacturer
- 2A Armament
- Category
- Battle Rifle
- Country
- United States
- Status
- In production
- Produced
- 2016
DimensionsAs issued, without a magazine or an optic.
- Barrel
- 457 mm
- Overall length
- 940 mm
- Weight, empty
- 3.06 kg
ActionHow it cycles, what trips it, and what feeds it.
- Action
- Gas operated direct impingement
- Firing mechanism
- Hammer fired
- Trigger
- Two stage
- Trigger pull
- 9.0 N
- Capacity
- 20
- Magazine
- Detachable box
MaterialsEach swatch is the material itself, not a colour chosen to stand for it.
- Frame
- Aluminum alloy
- Barrel
- Steel
- Stock
- Polymer
- Finish
- Hard anodized
BallisticsFrom the service cartridge, not a handload.
- Muzzle velocity
- 820 m/s
- Effective range
- 800 m
- Maximum range
- 4700 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.
Rifle length gas system
Free floating handguard
M lok rail
Picatinny rail
Flat top receiver
Rotating bolt
Threaded barrel
Qpq coating
Titanium muzzle brake
Billet receiver- Tensioning screw
Match trigger
Match chamber
Fluted receiver
Forward assist
Dust cover
Sr25 magazine compatible
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 107 battle rifles | 3.06 kg | 4.30 kg | Among the lightest tenth |
| Overall lengthAmong 107 battle rifles | 940 mm | 1025 mm | Shorter than about 80% |
| Barrel lengthAmong 110 battle rifles | 457 mm | 457 mm | Near the median |
| Magazine capacityAmong 110 battle rifles | 20 | 20 | Holds more rounds than about 60% |
Its place in the rankings
Answers
Questions about the 2A Armament Xanthos-Lite XLR-18 .308
How much does the 2A Armament Xanthos-Lite XLR-18 .308 weigh?
The 2A Armament Xanthos-Lite XLR-18 .308 weighs 3.06 kg (6.75 lb) empty. It is the 1st lightest of 107 battle rifles in the catalogue.
What caliber is the 2A Armament Xanthos-Lite XLR-18 .308?
The 2A Armament Xanthos-Lite XLR-18 .308 is chambered in .308 Winchester and 6.5 Creedmoor.
How many rounds does the 2A Armament Xanthos-Lite XLR-18 .308 hold?
The 2A Armament Xanthos-Lite XLR-18 .308 holds 20 rounds, fed from a detachable box magazine.
How long is the 2A Armament Xanthos-Lite XLR-18 .308?
The 2A Armament Xanthos-Lite XLR-18 .308 is 940 mm (37.0 in) long overall, with a 457 mm (18.0 in) barrel.
Who makes the 2A Armament Xanthos-Lite XLR-18 .308?
The 2A Armament Xanthos-Lite XLR-18 .308 is made by 2A Armament (United States). It was designed by 2A Armament.
When was the 2A Armament Xanthos-Lite XLR-18 .308 introduced?
The 2A Armament Xanthos-Lite XLR-18 .308 was introduced in 2016.
How does the 2A Armament Xanthos-Lite XLR-18 .308 operate?
The 2A Armament Xanthos-Lite XLR-18 .308 uses a gas operated direct impingement 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
75%
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/2a-xanthos-lite-xlr-18' \ --header 'X-API-Key: your_key'{ "id": "2a-xanthos-lite-xlr-18", "name": "2A Armament Xanthos-Lite XLR-18 .308", "manufacturer": { "id": "2a-armament", "name": "2A Armament", "countryCode": "US", "foundedYear": 2013, "website": "https://2a-arms.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": "33fe499d02fb74516ad8cb557bc218baec054029dcefa82c0bba4c3ea33f52f7" }, "category": { "id": "battle-rifle", "name": "Battle Rifle", "description": "Selective-fire rifles chambered in full-power cartridges" }, "country_of_origin": "US", "year_introduced": 2016, "barrel_length_mm": 457, "weight_empty_g": 3062, "action_type": "gas_operated_direct_impingement"}