Rock River Arms LAR-15M Operator ETR Carbine
Rock River Arms LAR-15M Operator ETR Carbine — documented specs for the Operator ETR: caliber 5.56x45 NATO · .223 Rem., barrel length 406 mm (15.98 in), overall length 838 mm (32.99 in). The source for each figure is listed below the specs (catalog as of 10/16/2026).
- Category
- Semi-auto rifles
- Classification (DE)
- Long firearm
- Era
- Present (from 1991)
- Origin
- United States
- Calibers
- 5.56x45 NATO · .223 Rem.
Derived from design and catalog dimensions under the German WaffG, Annex 1 Sec. 1 Subsec. 1 No. 2.5; the individual gun is what counts.
Also known as: RRA Operator ETR
Specifications
- Action
- Gas operated
- Barrel length
- 406 mm (15.98 in) · Operator ETR
- Overall length
- 838 mm (32.99 in) · Operator ETRstock collapsed to extended
- rockriverarms.com — product page LAR-15M Operator ETR Carbine
Sources
- rockriverarms.com — product page LAR-15M Operator ETR Carbine
Specifications come from the source cited alongside them; counts are based on our catalog as of the date stated. Not legal advice: what follows from these figures in a given country is decided by that country’s law. Waffenschrank is not affiliated with the manufacturers named.
Other models in 5.56x45 NATO
Models from other manufacturers in the same caliber, drawn from the catalog in no particular order — not a recommendation and not a comparison of specs.
- Semi-auto riflesBushmaster M4 Patrolman's
- History & service armsHowa Typ 89
- Single-shot & derringersRossi Brawler
Related
- Calibers of this model5.56x45 NATO
- Calibers of this model.223 Rem.
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Catalog as of