Firearms

Colt AR15A4 5.56x45mm 20-inch

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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

Colt AR15A4 with 20-inch barrel and flat-top upper receiver. A2 stock, M16A4-style upper without fixed carry handle.

Type: Rifle

Action: Semi-automatic

Caliber: 5.56x45mm

Capacity: 20

Year introduced: 2000, USA

Weight: 79 oz

Overall length: 39.5"

Status: Active

Intended use: Competition/Service Rifle