Firearms

SIG Sig SG 540 5.56x45mm 18.1-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

Export assault rifle that predated and informed the SG 550 design.

Type: Rifle

Action: Semi-Automatic

Caliber: 5.56x45mm NATO

Capacity: 20

Year introduced: 1977, Switzerland

Weight: 88 oz

Overall length: 37"

Status: Discontinued

Intended use: Military/Export