Rock River Arms LAR-15 National Match A4 5.56 NATO, 20 in Stainless Barrel, Free-Floated, A4 Flat-Top with Detachable Carry Handle
This Rock River Arms LAR-15 National Match A4 combines a 20-inch stainless, free-floated barrel with a rifle-length gas system and National Match-marked rear sight assembly. The A4 flat-top upper ships with a detachable carry handle, while classic A2 furniture and sights support precision-focused setup. It comes with four 20-round magazines, a factory hard case, and original paperwork.
Condition
Overall Condition: Very good condition, showing only light, superficial signs of prior handling or use.
Bore Condition: Good - Clean, well-maintained, minor wear marks.
Bore Rifling: Excellent Rifling - Sharp lands and grooves.
Specific Condition Notes: There are minor cosmetic scratches and small blemishes on the exterior surfaces. The bore presents a bright, reflective interior.
What’s Included
- Rock River Arms factory hard case (blue)
- Rock River Arms LAR-15/LAR-10 assembly instructions and paperwork
- Web sling
- Four 20-round AR-15 pattern aluminum magazines (straight-body, USGI-style)
The National Match A4 configuration features an A4 flat-top upper paired with a detachable carry handle and a National Match-marked A2 rear sight, offering precise, repeatable adjustments. Up front, an A2 front sight base with a fixed post and bottom sling swivel maintains a familiar sight picture and robust front-end setup.
Its 20-inch stainless steel barrel is free-floated under rifle-length A2 handguards, enhancing consistency while retaining the classic two-piece appearance. The barrel is threaded and fitted with an A2 flash suppressor, and the rifle-length gas system supports smooth cycling.
The lower is outfitted with a fixed A2 buttstock featuring a trapdoor storage compartment and rear sling swivel, plus an A2 pistol grip. Standard AR-15 features include the ejection port cover, forward assist, and case deflector, with a matte black finish across the receiver set and furniture for a uniform look.
Controls and configuration remain true to the AR-15 platform with direct impingement operation and a manual safety. Capacity is 20+1 with the included straight-body aluminum USGI-style magazines, aligning with the rifle’s National Match setup and 20-inch barrel profile.