Firearms

Primary Weapons Systems MK109 Mod 1

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

9.75" MK1 pistol; long-stroke piston, compact configuration with MREX M-LOK handguard.

Type: Pistol

Action: Semi-Automatic

Caliber: 5.56x45mm NATO

Capacity: 30

Year introduced: 2018, USA

Weight: 84 oz

Overall length: 21.5"

Status: Active

Intended use: Tactical, Home Defense