Overview

The Rock River Arms LAR-15 is a high-quality, American-made AR-15 style semi-automatic rifle chambered in 5.56 NATO / .223 Remington. Known for its precision machining, reliable performance, and durable construction, the LAR-15 has become a popular choice among civilian shooters, law enforcement, and competitive marksmen. This particular configuration includes a UTG optic, making it range- and field-ready right out of the box.

Specifications

Manufacturer: Rock River Arms

Model: LAR-15

Caliber: 5.56 NATO / .223 Remington

Action: Semi-automatic, direct impingement gas system

Capacity: Standard 30-round detachable magazine (capacity varies by jurisdiction)

Barrel Length: Typically 16″ chrome-moly barrel (may vary by specific model)

Overall Length: ~36″ (with stock extended)

Weight: Approx. 7–8 lbs (unloaded, varies by configuration)

Receiver: Forged 7075-T6 aluminum upper and lower, hard-anodized finish

Stock: 6-position collapsible stock (standard M4-style)

Handguard: Carbine-length or mid-length polymer or aluminum (depending on trim)

Sights/Optics: Equipped with UTG optic (commonly a red/green dot or compact scope) mounted to the Picatinny rail

Muzzle Device: A2-style flash hider (standard)

Safety: Ambidextrous selector (depending on configuration)

Design & Features

Precision Construction: Rock River Arms rifles are known for tight receiver fit and quality machining for improved accuracy and longevity.

Direct Impingement System: Proven AR-15 gas system provides smooth cycling and reliable operation with both .223 Rem and 5.56 NATO.

Customizability: Full-length Picatinny top rail and modular handguard allow for easy mounting of optics, lights, and accessories.

Ergonomics: Collapsible stock, ergonomic pistol grip, and ambidextrous controls (on some variants) ensure comfortable handling.

UTG Optic: Provides quick target acquisition and enhanced accuracy; designed to handle recoil and maintain zero under field conditions.

Durability: Hard-anodized aluminum receivers and chrome-moly barrel ensure long service life.

Performance

Accuracy: Well-regarded for delivering sub-MOA to ~1.5 MOA accuracy with quality ammunition, making it effective for both range shooting and varmint hunting.

Reliability: Built to handle sustained fire and varied ammo types with minimal malfunctions.

Handling: Lightweight, balanced design makes it easy to maneuver for range, competition, or tactical use.

Use Cases

Target & Range Shooting: Excellent for recreational shooting and skill development.

Hunting: Suitable for varmints, coyotes, and small to medium game with proper ammunition.

Home Defense: Compact size and semi-automatic capability make it a practical defensive rifle.

Competition: Popular among 3-gun shooters and tactical competition users.

Law Enforcement / Patrol Rifle: LAR-15 rifles are fielded by many police departments for their reliability and accuracy.