Firearms

Sig Sauer MCX 300 Blackout 9-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

An early-production MCX configuration with a 9-inch barrel in .300 Blackout, representing the original MCX platform before the Virtus update.

Type: Rifle

Action: Semi-Automatic

Caliber: .300 Blackout

Capacity: 30

Year introduced: 2016, Germany

Weight: 75 oz

Overall length: 28"

Status: Discontinued

Intended use: Special Operations, Home Defense