Firearms

SIG Sauer MCX Rattler 300 BLK

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

5.5" barrel MCX Rattler in .300 BLK; optimized for suppressed subsonic use in CQB roles.

Type: Pistol

Action: Semi-Automatic

Caliber: .300 Blackout

Capacity: 30

Year introduced: 2017, USA

Weight: 123.2 oz

Overall length: 35"

Status: Active

Military use: Yes

Intended use: Tactical, Home Defense