Rock River Arms LAR-15M X-1 — .223 Wylde, 18" Stainless, 20+1 — Black, RRA Operator Stock & Hogue® Grip, Carrying Case (XAR1751BV1 | UPC 842834106196)
Built for tiny groups and fast stages, the Rock River Arms LAR-15M X-1 refines the AR-15 into a practical-precision performer. Its accuracy-focused .223 Wylde chamber safely runs both 5.56 NATO and .223 Remington, while the 18" stainless steel barrel and free-float configuration deliver exceptional consistency from prone to barricade. Finished in black and outfitted with the adjustable RRA Operator Stock and a grippy Hogue® pistol grip, this 20+1 rifle (model XAR1751BV1) arrives range-ready with a carrying case—just add your glass and go.
Why the LAR-15M X-1 Stands Out
.223 Wylde Chamber = Accuracy + Flexibility: Tighter throat geometry enhances precision with match loads while remaining compatible with common 5.56 training ammo.
18" Stainless Match Barrel: The sweet spot for velocity and handling—stainless construction favors heat stability and repeatable harmonics over long strings.
Free-Float Rail Advantage: Keeps sling, grip, and barricade pressure off the barrel for more consistent point of impact.
Ergonomics that Win Stages: RRA Operator Stock adjusts for length of pull and cheek position; Hogue® grip supplies secure traction in rain, sweat, or gloves.
Ready-to-Run Package: Ships with a carrying case so you can zero and train immediately.
Note: Muzzle device, handguard pattern, and trigger configuration can vary by production lot. Confirm current specs with your retailer.
Key Features & Specs
Model: LAR-15M X-1
Part Number: XAR1751BV1
UPC: 842834106196
Caliber/Chamber: .223 Wylde (compatible with .223 Rem & 5.56×45 NATO)
Capacity: 20+1 (STANAG pattern magazines)
Barrel: 18" stainless steel, threaded muzzle (verify thread pitch/muzzle device)
Receivers: AR-15 pattern, black finish
Stock: RRA Operator Stock (adjustable LOP; cheek-friendly design)
Grip: Hogue® overmolded pistol grip
Handguard: Free-float design (M-LOK®/rail style varies)
Trigger: Competition-minded single- or two-stage (varies; check retailer)
Included: Carrying case; magazine(s) and small accessories may vary by distributor
Performance You’ll Notice
Match-Grade Precision: .223 Wylde + stainless, free-floated barrel = excellent results with 69–77gr OTM/HPBT as well as reliable groups with 55–62gr training loads.
Soft, Trackable Impulse: Tuned gas system and 18" length keep the reticle/dot flat for faster follow-ups and cleaner transitions.
Stable Shooting Positions: The Operator Stock aids repeatable shoulder pressure and eye alignment, helping you deliver consistent hits.
Ideal Use Cases
Practical/DMR Training: Build a dope card and ring steel from 300–800+ yards with quality ammo and glass.
Varmint & Predator Control: Fast handling, stainless-barrel consistency, and precise shot placement on coyotes and small game.
Range Days & Matches: A competition-leaning configuration friendly to high round counts and positional stages.
Optics & Accessory Pairings
LPVO (1–8× / 2–10×) or 3–15× scope to cover CQB speed through mid-range precision.
Lightweight bipod & rear bag for prone groups and zeroing.
5.56-compatible muzzle device (flash hider/comp/brake) to fine-tune recoil and signature—verify thread pitch and re-zero.
Setup Tips (Non-Instructional)
Zero & Verify: Start with a 100-yard zero (or 50/200), confirm at 300–600 yards to establish real-world holds.
Ammo Testing: Try several 55–77gr loads; many X-1 barrels love 69–77gr match bullets.
Mount Smart: Torque optic rings and rail accessories to spec; paint-pen witness marks aid quick checks.
Magazine Discipline: Use quality STANAG magazines; label and rotate to maintain spring health.
Care & Maintenance
Stainless Barrel: Clean with quality solvent, nylon/bronze brush, and patches; protect crown and throat.
Keep the BCG Lubed: Reliability improves notably during high-round-count training.
Hardware Check: Re-verify optic and handguard fasteners after the first long range session.
What’s in the Box*
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Rock River Arms LAR-15M X-1 — .223 Wylde, 18" Stainless, 20+1, Black with RRA Operator Stock & Hogue Grip (XAR1751BV1 | 842834106196): stainless-barrel consistency, .223 Wylde flexibility, and Rock River ergonomics—purpose-built for the long range, the match bay, and everything in between.
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