Rock River Arms LAR-15M Operator ETR Carbine — 5.56×45mm NATO, 16", 30+1 — Black, RRA NSP-2 Stock & Hogue® Grip, Carrying Case (OP1500 | UPC 842834125876)

Built for hard use and smooth control, the Rock River Arms LAR-15M Operator ETR Carbine delivers dependable 5.56×45mm NATO performance in a feature-rich, range-ready package. Anchored by a 16" barrel and a free-float handguard (configuration may vary), the Operator ETR adds ergonomic upgrades like the RRA NSP-2 adjustable stock and a grippy Hogue® pistol grip so you can run drills, courses, and duty tasks with confidence. This 30+1 AR ships with a carrying case—just add your optic, zero, and go. Model OP1500 blends Rock River Arms’ renowned fit and finish with practical enhancements for defense, training, and day-in/day-out range work.

Why Choose the LAR-15M Operator ETR?

• Proven 5.56 NATO Chambering: Broad ammo availability and reliable function with both 5.56 NATO and .223 Rem (use appropriate loads).

• 16" General-Purpose Barrel: The sweet spot for velocity, maneuverability, and reduced blast—ideal for home defense, patrol, and carbine classes.

• Free-Float Accuracy: Handguard isolates the barrel from sling and barricade pressure for more consistent POI and tighter groups.

• RRA NSP-2 Stock: Adjustable length of pull and cheek-friendly geometry help you lock in a stable mount across positions and kit.

• Hogue® Overmolded Grip: High-traction, hand-filling contour for secure control in rain, sweat, or gloves.

• Rock River Build Quality: Tight receiver fit, clean machining, and careful assembly for dependable cycling and long-term durability.

Note: Handguard pattern, muzzle device, and trigger configuration can vary by production lot/distributor. Confirm current specs with your retailer.

Key Features & Specifications

• Model: LAR-15M Operator ETR Carbine

• Part Number: OP1500

• UPC: 842834125876

• Caliber: 5.56×45mm NATO (also accepts .223 Rem)

• Capacity: 30+1 (STANAG-pattern magazines)

• Barrel: 16" steel, threaded muzzle (verify thread pitch and included device)

• Upper/Lower: AR-15 pattern aluminum receivers, black finish

• Handguard: Free-float rail (M-LOK®/rail layout varies)

• Stock: RRA NSP-2 adjustable carbine stock

• Grip: Hogue® overmolded pistol grip

• Trigger: Mil-spec or enhanced (varies by lot)

• Included: Carrying case; magazine(s) and small accessories may vary by distributor

Performance You’ll Notice

• Smooth, Trackable Impulse: Proper gas tuning and a free-floated system keep the dot/reticle calm for faster follow-ups.

• Practical Precision: Expect strong performance at typical carbine distances (0–300+ yds) with quality 55–77gr loads; many RRA barrels shine with 69–77gr match.

• Confident Manipulation: The NSP-2 stock and Hogue grip help maintain a consistent shoulder mount and trigger press through movement and position changes.

Ideal Use Cases

• Home & Property Defense: Maneuverable 16" profile with accessory-ready rail space for lights and slings.

• Training & Carbine Courses: Durable components that hold up to high round counts and adverse conditions.

• Ranch/Truck Rifle: Weather-resistant finish and proven 5.56 ballistics for everyday utility.

• General-Purpose AR: A flexible platform that adapts easily to red dots, LPVOs, and mission-specific accessories.

Recommended Setups

• Optics: Micro red dot for speed or an LPVO (1–6× / 1–8×) for speed + reach; match mount height to your cheek weld on the NSP-2.

• Muzzle Device: Flash hider for signature control or a comp/brake for flatter tracking (verify thread pitch; re-zero after installation).

• White Light & Sling: Compact light at 3/9 o’clock and a two-point QD sling for positional control.

• Magazines: Quality STANAG mags (PMAG®, Lancer®, USGI). Label and rotate for spring health.

Setup Tips (Non-Instructional)

1. Zero: Start with 50/200 or 100-yd zero; confirm at 300 to finalize holds.

2. Ammo Testing: Evaluate a spread of 55–77gr; document POI shifts and velocity for your dope card.

3. Torque & Witness: Torque optic and M-LOK® hardware to spec; paint-pen witness marks simplify inspections.

4. Lubrication: Keep the BCG appropriately wet during classes and high-round-count days.

Care & Maintenance

• Bore/Chamber: Clean with quality solvent; protect crown and feed ramps.

• Bolt Group: Inspect gas key screws, extractor, ejector, and gas rings regularly.

• Hardware Checks: Re-verify optic, handguard, and muzzle-device fasteners after the first long session or hard transport.

What’s in the Box*

• Rock River Arms LAR-15M Operator ETR Carbine (5.56 NATO)

• Carrying case

• Owner’s manual; magazine(s) and accessories vary by distributor
  *Always confirm the exact bill of materials with your retailer.

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Rock River Arms LAR-15M Operator ETR Carbine — 5.56×45mm NATO, 16", 30+1, Black with RRA NSP-2 Stock & Hogue Grip (OP1500 | 842834125876): a duty-tough, accuracy-minded AR that’s easy to control, easy to accessorize, and ready for everything from home defense to hard training—right out of the case.

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