Firearms

ArmaLite AR-10A4 .308 Win 20-inch

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Specifications

About

Notable Variants

Aftermarket Ecosystem

Historically Significant Examples

Serial Number Data

Production data from factory records and collector research. Year ranges are approximate for pre-1968 firearms.

Years	Serial Range	Count	Factory	Country	Confidence

AR-10A4 flat-top upper with 20-inch barrel and Picatinny rail.

Type: Rifle

Action: Semi-Automatic

Caliber: 7.62x51mm NATO

Capacity: 20

Year introduced: 2000, USA

Weight: 136 oz

Overall length: 41.5"

Status: Active

Intended use: Precision/Tactical