Shadow Systems MR920 Foundation Compact 9mm 4.0″ 15rd

The Shadow Systems MR920 Foundation is a compact 9mm handgun built around an optic-ready Foundation slide and a 4.0" unthreaded barrel. The design emphasizes configurable ergonomics, controllability, and compatibility with common compact Glock-style holsters and magazines. Finish and component choices reflect a duty-capable specification suitable for everyday carry or range use.

Key Specifications

• The pistol is chambered in 9mm.
• The barrel measures 4.0 inches and is unthreaded.
• Standard magazine capacity is 15 rounds.
• The package is listed as including two 15-round magazines and three backstraps plus a backstrap tool.
• The slide is a Foundation Slide and is optic-ready with a polymer optic cover plate.
• The firearm finish is listed as Nitride.
• Sights are specified as steel white-dot style.
• The guide rod is listed as carbon steel.
• The overall length is listed as 7 1/4 inches and the height as 4 3/4 inches.
• The trigger is described as a polymer flat-face with a listed pull weight of 4–4.5 lb.

The MR920 Foundation combines an optic-ready slide, configurable ergonomics, and compact dimensions to serve as a practical option for shooters seeking a high-functioning compact 9mm platform. Its balance of controllability and accessory readiness makes it suitable for everyday carry, range work, or duty use for those who prefer a compact, feature-forward pistol design.