Firearms

Sig Sauer SIG 556xi 5.56 NATO 16-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

Sig Sauer SIG 556xi, updated modular SIG 556 with improved ergonomics. Accepts standard AR-pattern magazines.

Type: Rifle

Action: Semi-Automatic

Caliber: 5.56 NATO

Capacity: 30

Year introduced: 2014, USA

Weight: 8.75 oz

Overall length: 36"

Status: Active

Intended use: Tactical, Home Defense