Rock River Arms LAR-15 Operator 5.56 NATO AR-15, 16 in Threaded Chrome-Moly Barrel, Free-Float Quad Rail
This Rock River Arms LAR-15 Operator stands out with a 16 inch chrome-moly barrel marked "RRA 5.56 NATO 1/9 CM," a free-float aluminum quad-rail, and an A4 flat-top upper with T-marked rail. It features a multi-port muzzle brake with a crenellated front, a railed folding front sight gas block with side sling loop, and an ERGO SureGrip. Included are four magazines and a one-piece cantilever scope mount, adding practical value to a proven AR-15 platform built in the USA.
Condition
Overall Condition: Good condition, showing some signs of prior use and handling.
Bore Condition: Good - Clean, well-maintained, minor wear marks.
Bore Rifling: Good Rifling - Intact, well-defined lands and grooves.
Specific Condition Notes: This firearm is in solid functional shape. There are scratches and blemishes present. The bore is clean and shiny.
What's Included
- Rock River Arms LAR-15 Operator semi-automatic rifle (5.56 NATO)
- 3x 30-round magazines
- 1x 10-round magazine
- One included magazine is a Magpul PMAG (polymer)
- One included magazine is a metal box magazine
- Unbranded one-piece cantilever scope mount with dual thumb nuts (not installed)
The 16 inch chrome-moly barrel is threaded and fitted with a multi-port brake featuring a crenellated front. The factory barrel markings confirm the 5.56 NATO chamber and 1:9 twist, a versatile setup for common bullet weights. This rifle uses a direct-impingement gas system.
The A4 flat-top upper carries a T-marked Picatinny rail (T2-T12 visible) for precise accessory placement and includes a forward assist and ejection port cover. Up front, a railed folding front sight gas block with an integral side sling loop provides a solid mounting point and front sight solution.
A free-float aluminum quad-rail handguard offers a full-length top rail with additional 3, 6, and 9 o'clock rail faces featuring round lightening holes. The bright silver-finished bolt carrier and aluminum receivers complement the durable build.
Furniture includes a Rock River Arms 6-position collapsible stock with a ribbed buttpad and a stated length of pull of 11-14.5 inches, plus an ERGO SureGrip overmolded pistol grip for secure handling. The rifle uses a detachable STANAG magazine interface and has a 30+1 capacity. A manual safety is standard.
This rifle comes with three 30-round magazines and one 10-round magazine; one is a Magpul PMAG (polymer) and one is a metal box magazine. An unbranded one-piece cantilever scope mount with dual thumb nuts is included but not installed.



