LWRC REPR
- Category
- Battle Rifle
- Barrel
- 508 mm
- Weight, empty
- 4.72 kg
- Introduced
- 2010
About
What it is, and why it matters
The LWRC REPR (Rapid Engagement Precision Rifle) is the original semi-automatic 7.62x51mm NATO precision battle rifle introduced by LWRC International in 2010, built on an AR-10-pattern platform around the company's signature self-regulating short-stroke gas piston operating system. The piston design keeps the bolt carrier group cool and clean for improved reliability over direct-impingement AR-10s, while the cold hammer-forged barrel, Geissele two-stage trigger, full-length Picatinny rail, and proprietary four-port muzzle brake target sub-MOA precision for hunting, long-range competition, and law enforcement. The REPR was offered with interchangeable 12, 16, and 20-inch barrels and feeds from SR-25/DPMS-pattern magazines. It was later superseded by the redesigned REPR MKII, which introduced the Monoforge upper receiver and spiral-fluted barrels.
LWRC's name stands for 'Land Warfare Resources Corporation,' reflecting its military-contractor roots. The REPR was the company's bid to bring piston-driven reliability, normally associated with carbines, to the demanding 7.62mm semi-automatic precision rifle class.
Original (pre-MKII) REPR. The 20-inch configuration weighs approximately 10.4 lb (about 4,717 g) unloaded and about 13 lb (about 5,897 g) loaded; overall length 41.25 in (1,048 mm). Cartridge also offered in 6.5 Creedmoor on later production. The REPR designation continues today in the REPR MKII line, a separate, redesigned model. Discontinuation year is approximate, marking the transition to the MKII.
Specification
Everything measured
IdentityWhat it is, who built it and when.
- Manufacturer
- LWRC International
- Category
- Battle Rifle
- Country
- United States
- Status
- Out of production
- Produced
- 2010 to 2016
DimensionsAs issued, without a magazine or an optic.
- Barrel
- 508 mm
- Overall length
- 1048 mm
- Weight, empty
- 4.72 kg
- Weight, loaded
- 5.90 kg
ActionHow it cycles, what trips it, and what feeds it.
- Action
- Gas operated short stroke piston
- Firing mechanism
- Rotating bolt
- Trigger
- Two stage
- Capacity
- 20
- Magazine
- Detachable box
MaterialsEach swatch is the material itself, not a colour chosen to stand for it.
- Frame
- Aluminum alloy
- Barrel
- Cold hammer forged steel
- Stock
- Polymer
- Finish
- Black nitride
BallisticsFrom the service cartridge, not a handload.
- Muzzle velocity
- 826 m/s
- Effective range
- 800 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
Cold hammer forged barrel
Free floating barrel
Full length picatinny rail
Geissele two stage trigger
Proprietary four port muzzle brake
Magpul furniture
Adjustable stock
Ambidextrous controls
Backup iron sights
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 86 7.62x51mm NATO battle rifles | 4.72 kg | 4.30 kg | Heavier than about 90% |
| Overall lengthAmong 85 7.62x51mm NATO battle rifles | 1048 mm | 1025 mm | Longer than about 60% |
| Barrel lengthAmong 87 7.62x51mm NATO battle rifles | 508 mm | 458 mm | Longer than about 60% |
| Magazine capacityAmong 87 7.62x51mm NATO battle rifles | 20 | 20 | Near the median |
Answers
Questions about the LWRC REPR
How much does the LWRC REPR weigh?
The LWRC REPR weighs 4.72 kg (10.40 lb) empty and 5.90 kg (13.00 lb) loaded.
What caliber is the LWRC REPR?
The LWRC REPR is chambered in 7.62x51mm NATO.
How many rounds does the LWRC REPR hold?
The LWRC REPR holds 20 rounds, fed from a detachable box magazine.
How long is the LWRC REPR?
The LWRC REPR is 1048 mm (41.3 in) long overall, with a 508 mm (20.0 in) barrel.
Who makes the LWRC REPR?
The LWRC REPR is made by LWRC International (United States).
When was the LWRC REPR introduced?
The LWRC REPR was introduced in 2010 and discontinued in 2016.
How does the LWRC REPR operate?
The LWRC REPR uses a gas operated short stroke piston action, and its firing mechanism is rotating bolt.
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
74%
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/lwrc-repr' \ --header 'X-API-Key: your_key'{ "id": "lwrc-repr", "name": "LWRC REPR", "manufacturer": { "id": "lwrc-international", "name": "LWRC International", "countryCode": "US", "foundedYear": 2006, "website": "https://www.lwrci.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 03:40:45", "version": "8f5612a5c566789ca77e8f2e08f1d8513058f3e3ce2bdff7cbaae87bd0012bda" }, "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": 508, "weight_empty_g": 4717, "action_type": "gas_operated_short_stroke_piston"}