The Iver Johnson MF20 is a 20 Gauge semi-automatic shotgun configured with a 20 in steel barrel and a 3″ chamber. It pairs a tactical synthetic stock with adjustable cheekrest and accessory rails for optics or accessories. Designed for practical, high-utility roles where modularity and straightforward operation are priorities.
Key Specifications
- The shotgun is chambered in 20 Gauge.
- The action is Semi-Auto.
- The barrel measures 20 inches.
- The chamber accepts 3″ shells.
- The overall length is 38.5 inches.
- The unloaded weight is approximately 7.4 lbs.
- The stock is black synthetic with an adjustable cheekrest.
- The firearm includes internal threaded choke tubes.
- Sights are provided as flip-up front and rear configurations.
- Accessory mounting includes a Picatinny rail on the receiver and forend.
Cleanly outfitted and built for flexibility, the MF20 offers a practical platform for tactical applications and general sporting use. Its combination of a threaded choke system, accessory rails, and adjustable stock geometry provides a straightforward, adaptable shotgun for shooters seeking a no-nonsense, modular configuration.
Product information is supplied by the manufacturer and/or distributor and may be automatically formatted or enhanced using AI for clarity and consistency. While we strive for accuracy, specifications, features, and included items may change without notice. Always verify details using the manufacturer’s official documentation and the information shown on this product page before purchase or use.





